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Rondezy

Questions (297)

1. A group of fishes chosen randomly were being researched by a zoologist, who found thatthe mean tail length of 100 fishes was
1. 1 answer
2. 136 views
The sum of squares is 120 for the total with a within sum of squares of 40. The between sum of squares is ?
1. 1 answer
2. 185 views
in a clinical trial there are 4 groups included in the study. The degrees of freedom for between groups is?
1. 1 answer
2. 160 views
A botanist is growing 20 red roses and 40 yellow roses. The probability of selecting 10 red roses and 20 yellow roses is?
1. 1 answer
2. 278 views
If there are 6 tadpoles in a tank and 2 angel fishes, the probability of selecting one tadpole or one angel fish would be?
1. 1 answer
2. 251 views
A biologist must select 4 fishes from a pond with a population of 100. what is the probability of selecting the four fishes.
1. 1 answer
2. 145 views
A biologist must select 4 fishes from a pond with a population of 100. The probability of selecting the four fishes is?
1. 1 answer
2. 158 views
In a class, there were 100 students, 50 took math and science while 20 took math only. The probability of picking a student who
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2. 216 views
In a plant trial, the number of plants that had diseases and rotten leaves were 4 and those without disease but had rotten
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2. 114 views
In a plant trial, the number of plants that had diseases and rotten leaves were 4 and those without disease but had rotten
1. 1 answer
2. 183 views
In a clinical trial where the before and after data was collected, the mean difference time it takes for relief of pain on a new
1. 1 answer
2. 166 views
The length of the stem for five roses were measured as follows: 2, 4, 6, 8, 10. The first quartile position is?
1. 1 answer
2. 138 views
The length of the stem for five roses were measured as follows: 2, 4, 6, 8, 10. The first quartile position is _________ .
1. 1 answer
2. 70 views
f the results of an anova produces an F test of 3.89 at the requisite degrees of freedom compared to the critical value of F =
1. 1 answer
2. 174 views
A parameter for a population must be ______________.
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2. 99 views
A parameter for a population must be ______________.a. varying b. diverse c. homogeneous d. independent
1. 1 answer
2. 91 views
A parameter for a population must be ______________.a) varying b) independent c) diverse d) homogeneous
1. 1 answer
2. 77 views
A parameter for a population must be ______________.a. varying b. independent c. diverse d. homogeneous
1. 1 answer
2. 83 views
A parameter for a population must be ______________.a. varying b. independent d. homogeneous c. diverse
1. 0 answers
2. 76 views
A parameter for a population must be ______________.a. varying b. independent c. homogeneous d. diverse
1. 1 answer
2. 167 views
A parameter for a population must be ______________.
1. 1 answer
2. 91 views
A parameter for a population must be ______________.varying independent homogeneous diverse
1. 0 answers
2. 155 views
If the mean of a variable in a study is 10 with a standard deviation of 5, what would be the minimum value that could be
1. 1 answer
2. 115 views
At a clinic, there are 100 patients, 50 patients have hypertension and only 30 show symptoms. What would be the probability of
1. 2 answers
2. 132 views
What would be the probability of selecting only 2 angel fishes?0.33 0.90 1.00 1.33
1. 1 answer
2. 109 views
In a tank, there are 6 goldfishes and 3 angel fishes. What is the probability of selecting 2 gold fishes and 1 angel fish?1/9
1. 1 answer
2. 137 views
When the probability of falling in the error region is 0.05, this equates to a error margin of _______?90% 95% 5% 2.5%
1. 1 answer
2. 118 views
If the error margin of a study is 20%, what would the accuracy level be?100% 200% 20% 80%
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2. 148 views
If the mean of a variable in a study is 200 with a standard deviation of 25, what would be the maximum value that could be
1. 1 answer
2. 160 views
A scientist is measuring systolic blood pressure for three patients. The expected normal value for systolic blood pressure is
1. 1 answer
2. 230 views
If the error margin in an analytical study is 20 %. What is the region of accuracy?A) 10% B) 20% C) 80% D) 90%
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2. 128 views
If the error margin in an analytical study is 20 %. What is the region of accuracy?10% 20% 80% 90%
1. 1 answer
2. 194 views
In a sample of 100 patients, the critical cutoff value for glucose is 6 while the mean glucose reading for the sample is 8. The
1. 1 answer
2. 153 views
In a town, 200 persons get the flu and of this group 20 have pain and 60 have fever. Determine the probability of selecting a
1. 1 answer
2. 130 views
In a town, 200 persons get the flu and of this group 20 have pain and 60 have fever. Determine the probability of selecting a
1. 1 answer
2. 108 views
In a town, 200 persons get the flu and of this group 20 have pain and 60 have fever. Determine the probability of selecting a
1. 1 answer
2. 159 views
Which formula is correct for determining the F statistic?SSbg/DFbg MSbg/MSwg MSwg/MSbg SSwg/DFwg
1. 1 answer
2. 94 views
Which formula is correct for determining the F statistic?MSbg/MSwg SSbg/DFbg MSwg/MSbg SSwg/DFwg
1. 1 answer
2. 210 views
If the mean for group 1 in a clinical trial for the time for a drug X to act is 10 minutes and 8 minutes for group 2 and if the
1. 1 answer
2. 140 views
In a random sample of fishes from a pond, the mean tail length was 6.0 mm and the reference tail length for the species was
1. 1 answer
2. 106 views
From question #8, what proportion is between the mean and 1.95?0.0244 0.3577 0.4744 0.6744
1. 1 answer
2. 68 views
In an epidemic, the probability of having S|D is 0.2 and P(D) = 0.1. P(S|D') = 0.04 and P (D') = 0.01. What is the P(D|S)?0.004
1. 1 answer
2. 85 views
A botanist has four apple buds and two rose buds in separate baskets on the same table. What is the probability of successfully
1. 1 answer
2. 116 views
If a the constant for a regression is 0.8 and the standard deviation for the x variables is 4 while the standard deviation for
1. 1 answer
2. 116 views
Which formula is correct for determining the F statistic?A) MSbg/MSwg B) SSbg/DFbg C) MSwg/MSbg D) SSwg/DFwg
1. 1 answer
2. 105 views
In a class of 20 students, twelve take mathematics and genetics, while eight take genetics only. What is the probability of
1. 1 answer
2. 188 views
If a the constant for a regression is 0.8 and the standard deviation for the x variables is 4 while the standard deviation for
1. 1 answer
2. 221 views
If a the constant for a regression is 0.8 and the standard deviation for the x variables is 4 while the standard deviation for
1. 1 answer
2. 231 views
If the mean square between groups is 100 and the mean square within groups is 10. What is the F statistic?
1. 1 answer
2. 197 views
A geneticist is examining the relationship between genotype and phenotype for roses. He calculated a chi-square value of 4.1 for
1. 1 answer
2. 141 views
If the mean for group 1 in a clinical trial for the time for a drug X to act is 10 minutes and 8 minutes for group 2 and if the
1. 1 answer
2. 201 views
In a random sample of fishes from a pond, the mean tail length was 6.0 mm and the reference tail length for the species was
1. 1 answer
2. 128 views
1n a random sample of fishes from a pond, the mean tail length was 6.0 mm and the reference tail length for the species was
1. 1 answer
2. 118 views
From question #8, what proportion is between the mean and 1.95?
1. 1 answer
2. 162 views
If a z score of 1.95 is equal to a p of 0.9744, what proportion is greater than1.95.
1. 1 answer
2. 193 views
In planting roses and using fertilisers, a botanist realised that the rate of growth increased and was correlated at 0.85.
1. 1 answer
2. 155 views
The relationship between weight and age was found to have a linear relationship with expression weight= 3.0 (age) +10. Predict
1. 1 answer
2. 206 views
In a town, it was found that water volume was determined by river height. if the relationship is linear and the coefficient for
1. 1 answer
2. 120 views
In an epidemic, the probability of having S|D is 0.2 and P(D) = 0.1. P(S|D') = 0.04 and P (D') = 0.01. What is the P(D|S)?
1. 1 answer
2. 153 views
A botanist has four apple buds and two rose buds in separate baskets on the same table. What is the probability of successfully
1. 1 answer
2. 250 views
There are five black puppies in a kennel. What is the probability of selecting two puppies?
1. 1 answer
2. 189 views
A fifty percent likelihood represents__________ probability
1. 1 answer
2. 120 views
The chi-square allows for the use of expected data to be contrasted with observed data points
1. 1 answer
2. 112 views
The ratio scale is the highest measurement scale.
1. 1 answer
2. 138 views
The one way anova is constructed around the concept of determining goodness of fit between explanatory and outcome variable.
1. 1 answer
2. 250 views
how do you compare two means that are random
1. 1 answer
2. 121 views
when comparing the means of two samples that are considered random in order to test whether a significant difference exists, one
1. 0 answers
2. 131 views
In comparing the means of two samples that are considered random in order to test whether a significant difference exists, one
1. 0 answers
2. 137 views
The area under the Gaussian indicates the probability of being accurately measured with precision
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2. 223 views
Association between two categorical variables can be determined by simple linear regression.
1. 1 answer
2. 188 views
The error margin is where the alternative hypothesis is accepted.
1. 1 answer
2. 158 views
The spread of the data which determines the error in the groups and between the groups is calculated by the sum of squares.
1. 1 answer
2. 110 views
One can say that the regression and anova seem to be related because of the idea of finding the best fit for the data.
1. 1 answer
2. 148 views
are Two events that cannot occur together determined by the addition rule
1. 1 answer
2. 129 views
Two events that cannot together is determined by the addition rule.
1. 1 answer
2. 131 views
The ordinal scale is a ranking scale.
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2. 168 views
The multiplication rule in probability allows for two events that can occur simultaneously.
1. 1 answer
2. 178 views
is the Bayes theorem based on conditionality.
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2. 134 views
The Bayes theorem is based on conditionality.
1. 1 answer
2. 149 views
The strength of association between two continuous variable can be determined by the correlation coefficient.
1. 1 answer
2. 108 views
The bell shaped curve is called the Gaussian
1. 1 answer
2. 141 views
Z scores facilitate the proportional determination of a sample into segmental capture of accuracy and precision in data
1. 1 answer
2. 180 views
The probability that an event occurs only if a prior one happens is called apriori.
1. 1 answer
2. 187 views
If the answer falls in the region of accuracy, the null hypothesis is accepted.
1. 1 answer
2. 95 views
The regression line requires the best fit line taken through the data points.
1. 1 answer
2. 180 views
Mean square is calculated by dividing sum of squares by degrees of freedom.
1. 1 answer
2. 244 views
how does a digital microscope help society
1. 1 answer
2. 120 views
how does physics work in a digital microscope
1. 1 answer
2. 112 views
what gadget can be helpful in zoology
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2. 136 views
John said Mary could know about the error is she calculated the standard error of the mean and the coefficient of variation.
1. 1 answer
2. 140 views
Peter questioned whether the sample would represent the population and Mary said it had to be in order to be a proper sample.
1. 1 answer
2. 87 views
DEFINE DENSITY AND RELATIVE DENSITY
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2. 100 views
TOMMY FLIPS A MARBLE INTO THE AIR. ITS INITIAL VELOCITY IS 8.0 m/s.TAKING g = 10 m/s2 AND IGNORING AIR RESISTANCE, CALCULATE (i)
1. 1 answer
2. 150 views
In Mary's survey, she identified categories for her variables and wanted to test the association between categories. She
1. 1 answer
2. 137 views
EXPLAIN HOW v= u + at WAS DETERMINED
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2. 94 views
LIST FOUR EQUATIONS OF MOTION
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2. 92 views
THE MASS OF AN EMPTY DENSITY BOTTLE IS 20gTHE MASS OF THE BOTTLE FILLED WITH WATER IS 50g THE MASS OF THE BOTTLE FILLED WITH OIL
1. 1 answer
2. 185 views

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