Question
What was the null hypothesis for the mycorrhizae experiment?
Question 1 options:
The presence of mycorrhizae in the soil will result in increased plant growth
Plant growth will result in increased mycorrhizal fungi growth
The presence of mycorrhizae in the soil will not influence the growth of the plants
Plant presence will have no impact on the mycorrhizal fungi
Question 2 (1 point)
What was the alternative hypothesis for the mycorrhizae experiment?
Question 2 options:
Marigolds planted in the mycorrhizal soil will grow taller and weigh more than zinnia planted in the potting soil
Marigolds planted in the mycorrhizal soil will be shorter and weigh less than zinnia planted in the potting soil
Marigolds planted in the mycorrhizal soil will grow to the same height and weight as zinnia planted in the potting soil
Question 3 (1 point)
The independent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.
Question 3 options:
type of soil (mycorrhizae or potting soil)
plant mass
stem length
light availability
shelf location in the plant cart
Question 4 (1 point)
The dependent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.
Question 4 options:
plant mass
type of soil (mycorrhizae or potting soil)
shelf location in the plant cart
stem length
light availability
Question 5 (1 point)
Which of the following could have been confounding factors in the mycorrhizae experiment? Select all that apply.
Question 5 options:
Students mixed up the spoons when scooping soil, contaminating the potting soil with mycorrhizae
Light availability differed between shelves on the grow cart
Replicate plants received different amounts of water
Plants in the mycorrhizae treatment grew taller than plants in the potting soil treatment
Marigolds were grown in two different soil types
Question 6 (1 point)
The control treatment in the mycorrhizae experiment was the ________.
Question 6 options:
keeping light and water constant across all replicates
mycorrhizae soil
potting soil
Question 7 (1 point)
The mean stem length of plants in mycorrhizae soil was 198.22 mm, while the mean stem length of plants in potting soil was 181.82 mm. A t-test was conducted to determine whether a difference was present in stem length between these two soil treatments. The p-value of this test was p = 0.24. Based on these results, which of the following will you conclude?
Question 7 options:
The presence of mycorrhizae resulted in shorter marigold stems
The presence of mycorrhizae did not influence marigold stem length
The presence of mycorrhizae resulted in longer marigold stems
Question 8 (1 point)
The mean plant mass of marigolds grown in mycorrhizae soil was 0.75 g, while the mean plant mass of marigolds grown in potting soil was 0.68 g. A t-test was conducted to determine whether a difference was present in plant mass between the two soil treatments. The p-value of this test was p = 0.51. Based on these results, which of the following will you conclude?
Question 8 options:
The presence of mycorrhizae resulted in marigold plants with greater mass than plants grown in potting soil
The presence of mycorrhizae did not influence marigold mass
The presence of mycorrhizae resulted in marigold plants with lower mass than plants grown in potting soil
Question 9 (1 point)
Why was a phosphate-free fertilizer used to fertilize the plants?
Question 9 options:
Plants do not require phosphate for photosynthesis.
Phosphate is toxic to zinnia plants.
Using fertilizer with phosphate would create the right conditions for the mycorrhizae to become parasitic.
Mycorrhizae only form symbiotic connections to plants when phosphate is absent from the soil.
Question 10 (1 point)
Examine the picture. What confounding factor may have been introduced by growing the plants from both treatments in close proximity to one another? Select all that apply.
marigolds in rack
Question 10 options:
Mycorrhizae from the mycorrhizal soil treatment may have contaminated the potting soil tubes
Pollinators may have found it difficult to reach plants in the middle of the tube rack
Taller plants could block light from reaching shorter plants
The roots of the different plants were competing for nutrients in the soil
Question 11 (1 point)
What error may have been introduced if students failed to remove the roots of the plant during the data collection process?
Question 11 options:
Measuring the plant height with the roots attached would result in a shorter height than the height of the stem measured alone
This is a trick question, zinnia are non-vascular plants and therefore don't produce roots
Plants with roots attached would weigh more than those that had the roots removed
Question 12 (1 point)
When reporting your t-test results, your sentences for stem length and mass will include the ________. Select all that apply.
Question 12 options:
degrees of freedom (df)
t-value
table or figure reference for the mean values
p-value
statistical values contained in parentheses at the end of a descriptive sentence
Question 13 (1 point)
If the results of the t-test for marigold stem length were p=0.381, would these results support the alternative hypothesis of this study?
Question 13 options:
Yes, the marigold stem length was statistically higher in the mycorrhizae soil
No, there was no statistical difference in marigold stem length between the soils
Question 14 (1 point)
If the results of the t-test for zinnia mass were: p=0.217, could we reject the null hypothesis of the study?
Question 14 options:
Yes, the plant mass was higher in the mycorrhizae soil
No. We failed to reject the null hypothesis because no statistical difference was found in marigold mass between the two soil types
0 of 14 questions saved
Question 1 options:
The presence of mycorrhizae in the soil will result in increased plant growth
Plant growth will result in increased mycorrhizal fungi growth
The presence of mycorrhizae in the soil will not influence the growth of the plants
Plant presence will have no impact on the mycorrhizal fungi
Question 2 (1 point)
What was the alternative hypothesis for the mycorrhizae experiment?
Question 2 options:
Marigolds planted in the mycorrhizal soil will grow taller and weigh more than zinnia planted in the potting soil
Marigolds planted in the mycorrhizal soil will be shorter and weigh less than zinnia planted in the potting soil
Marigolds planted in the mycorrhizal soil will grow to the same height and weight as zinnia planted in the potting soil
Question 3 (1 point)
The independent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.
Question 3 options:
type of soil (mycorrhizae or potting soil)
plant mass
stem length
light availability
shelf location in the plant cart
Question 4 (1 point)
The dependent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.
Question 4 options:
plant mass
type of soil (mycorrhizae or potting soil)
shelf location in the plant cart
stem length
light availability
Question 5 (1 point)
Which of the following could have been confounding factors in the mycorrhizae experiment? Select all that apply.
Question 5 options:
Students mixed up the spoons when scooping soil, contaminating the potting soil with mycorrhizae
Light availability differed between shelves on the grow cart
Replicate plants received different amounts of water
Plants in the mycorrhizae treatment grew taller than plants in the potting soil treatment
Marigolds were grown in two different soil types
Question 6 (1 point)
The control treatment in the mycorrhizae experiment was the ________.
Question 6 options:
keeping light and water constant across all replicates
mycorrhizae soil
potting soil
Question 7 (1 point)
The mean stem length of plants in mycorrhizae soil was 198.22 mm, while the mean stem length of plants in potting soil was 181.82 mm. A t-test was conducted to determine whether a difference was present in stem length between these two soil treatments. The p-value of this test was p = 0.24. Based on these results, which of the following will you conclude?
Question 7 options:
The presence of mycorrhizae resulted in shorter marigold stems
The presence of mycorrhizae did not influence marigold stem length
The presence of mycorrhizae resulted in longer marigold stems
Question 8 (1 point)
The mean plant mass of marigolds grown in mycorrhizae soil was 0.75 g, while the mean plant mass of marigolds grown in potting soil was 0.68 g. A t-test was conducted to determine whether a difference was present in plant mass between the two soil treatments. The p-value of this test was p = 0.51. Based on these results, which of the following will you conclude?
Question 8 options:
The presence of mycorrhizae resulted in marigold plants with greater mass than plants grown in potting soil
The presence of mycorrhizae did not influence marigold mass
The presence of mycorrhizae resulted in marigold plants with lower mass than plants grown in potting soil
Question 9 (1 point)
Why was a phosphate-free fertilizer used to fertilize the plants?
Question 9 options:
Plants do not require phosphate for photosynthesis.
Phosphate is toxic to zinnia plants.
Using fertilizer with phosphate would create the right conditions for the mycorrhizae to become parasitic.
Mycorrhizae only form symbiotic connections to plants when phosphate is absent from the soil.
Question 10 (1 point)
Examine the picture. What confounding factor may have been introduced by growing the plants from both treatments in close proximity to one another? Select all that apply.
marigolds in rack
Question 10 options:
Mycorrhizae from the mycorrhizal soil treatment may have contaminated the potting soil tubes
Pollinators may have found it difficult to reach plants in the middle of the tube rack
Taller plants could block light from reaching shorter plants
The roots of the different plants were competing for nutrients in the soil
Question 11 (1 point)
What error may have been introduced if students failed to remove the roots of the plant during the data collection process?
Question 11 options:
Measuring the plant height with the roots attached would result in a shorter height than the height of the stem measured alone
This is a trick question, zinnia are non-vascular plants and therefore don't produce roots
Plants with roots attached would weigh more than those that had the roots removed
Question 12 (1 point)
When reporting your t-test results, your sentences for stem length and mass will include the ________. Select all that apply.
Question 12 options:
degrees of freedom (df)
t-value
table or figure reference for the mean values
p-value
statistical values contained in parentheses at the end of a descriptive sentence
Question 13 (1 point)
If the results of the t-test for marigold stem length were p=0.381, would these results support the alternative hypothesis of this study?
Question 13 options:
Yes, the marigold stem length was statistically higher in the mycorrhizae soil
No, there was no statistical difference in marigold stem length between the soils
Question 14 (1 point)
If the results of the t-test for zinnia mass were: p=0.217, could we reject the null hypothesis of the study?
Question 14 options:
Yes, the plant mass was higher in the mycorrhizae soil
No. We failed to reject the null hypothesis because no statistical difference was found in marigold mass between the two soil types
0 of 14 questions saved
Answers
GPT-4o mini
### Question 1:
**What was the null hypothesis for the mycorrhizae experiment?**
- **Answer:** The presence of mycorrhizae in the soil will not influence the growth of the plants.
### Question 2:
**What was the alternative hypothesis for the mycorrhizae experiment?**
- **Answer:** Marigolds planted in the mycorrhizal soil will grow taller and weigh more than zinnia planted in the potting soil.
### Question 3:
**The independent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.**
- **Answer:** type of soil (mycorrhizae or potting soil)
### Question 4:
**The dependent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.**
- **Answer:** plant mass, stem length
### Question 5:
**Which of the following could have been confounding factors in the mycorrhizae experiment? Select all that apply.**
- **Answer:**
- Students mixed up the spoons when scooping soil, contaminating the potting soil with mycorrhizae
- Light availability differed between shelves on the grow cart
- Replicate plants received different amounts of water
### Question 6:
**The control treatment in the mycorrhizae experiment was the ________.**
- **Answer:** potting soil
### Question 7:
**The mean stem length of plants in mycorrhizae soil was 198.22 mm, while the mean stem length of plants in potting soil was 181.82 mm. A t-test was conducted to determine whether a difference was present in stem length between these two soil treatments. The p-value of this test was p = 0.24. Based on these results, which of the following will you conclude?**
- **Answer:** The presence of mycorrhizae did not influence marigold stem length.
### Question 8:
**The mean plant mass of marigolds grown in mycorrhizae soil was 0.75 g, while the mean plant mass of marigolds grown in potting soil was 0.68 g. A t-test was conducted to determine whether a difference was present in plant mass between the two soil treatments. The p-value of this test was p = 0.51. Based on these results, which of the following will you conclude?**
- **Answer:** The presence of mycorrhizae did not influence marigold mass.
### Question 9:
**Why was a phosphate-free fertilizer used to fertilize the plants?**
- **Answer:** Using fertilizer with phosphate would create the right conditions for the mycorrhizae to become parasitic.
### Question 10:
**Examine the picture. What confounding factor may have been introduced by growing the plants from both treatments in close proximity to one another? Select all that apply.**
- **Answer:**
- Mycorrhizae from the mycorrhizal soil treatment may have contaminated the potting soil tubes
- Taller plants could block light from reaching shorter plants
- The roots of the different plants were competing for nutrients in the soil
### Question 11:
**What error may have been introduced if students failed to remove the roots of the plant during the data collection process?**
- **Answer:** Plants with roots attached would weigh more than those that had the roots removed.
### Question 12:
**When reporting your t-test results, your sentences for stem length and mass will include the ________. Select all that apply.**
- **Answer:**
- degrees of freedom (df)
- t-value
- p-value
### Question 13:
**If the results of the t-test for marigold stem length were p=0.381, would these results support the alternative hypothesis of this study?**
- **Answer:** No, there was no statistical difference in marigold stem length between the soils.
### Question 14:
**If the results of the t-test for zinnia mass were: p=0.217, could we reject the null hypothesis of the study?**
- **Answer:** No. We failed to reject the null hypothesis because no statistical difference was found in marigold mass between the two soil types.
**What was the null hypothesis for the mycorrhizae experiment?**
- **Answer:** The presence of mycorrhizae in the soil will not influence the growth of the plants.
### Question 2:
**What was the alternative hypothesis for the mycorrhizae experiment?**
- **Answer:** Marigolds planted in the mycorrhizal soil will grow taller and weigh more than zinnia planted in the potting soil.
### Question 3:
**The independent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.**
- **Answer:** type of soil (mycorrhizae or potting soil)
### Question 4:
**The dependent variable(s) in the mycorrhizae experiment was(were) ________. Select all that apply.**
- **Answer:** plant mass, stem length
### Question 5:
**Which of the following could have been confounding factors in the mycorrhizae experiment? Select all that apply.**
- **Answer:**
- Students mixed up the spoons when scooping soil, contaminating the potting soil with mycorrhizae
- Light availability differed between shelves on the grow cart
- Replicate plants received different amounts of water
### Question 6:
**The control treatment in the mycorrhizae experiment was the ________.**
- **Answer:** potting soil
### Question 7:
**The mean stem length of plants in mycorrhizae soil was 198.22 mm, while the mean stem length of plants in potting soil was 181.82 mm. A t-test was conducted to determine whether a difference was present in stem length between these two soil treatments. The p-value of this test was p = 0.24. Based on these results, which of the following will you conclude?**
- **Answer:** The presence of mycorrhizae did not influence marigold stem length.
### Question 8:
**The mean plant mass of marigolds grown in mycorrhizae soil was 0.75 g, while the mean plant mass of marigolds grown in potting soil was 0.68 g. A t-test was conducted to determine whether a difference was present in plant mass between the two soil treatments. The p-value of this test was p = 0.51. Based on these results, which of the following will you conclude?**
- **Answer:** The presence of mycorrhizae did not influence marigold mass.
### Question 9:
**Why was a phosphate-free fertilizer used to fertilize the plants?**
- **Answer:** Using fertilizer with phosphate would create the right conditions for the mycorrhizae to become parasitic.
### Question 10:
**Examine the picture. What confounding factor may have been introduced by growing the plants from both treatments in close proximity to one another? Select all that apply.**
- **Answer:**
- Mycorrhizae from the mycorrhizal soil treatment may have contaminated the potting soil tubes
- Taller plants could block light from reaching shorter plants
- The roots of the different plants were competing for nutrients in the soil
### Question 11:
**What error may have been introduced if students failed to remove the roots of the plant during the data collection process?**
- **Answer:** Plants with roots attached would weigh more than those that had the roots removed.
### Question 12:
**When reporting your t-test results, your sentences for stem length and mass will include the ________. Select all that apply.**
- **Answer:**
- degrees of freedom (df)
- t-value
- p-value
### Question 13:
**If the results of the t-test for marigold stem length were p=0.381, would these results support the alternative hypothesis of this study?**
- **Answer:** No, there was no statistical difference in marigold stem length between the soils.
### Question 14:
**If the results of the t-test for zinnia mass were: p=0.217, could we reject the null hypothesis of the study?**
- **Answer:** No. We failed to reject the null hypothesis because no statistical difference was found in marigold mass between the two soil types.