Asked by Me

According to a genetics model, plants of a particular species occur in the categories A, B, C, and D, in the ratio 9:3:3:1. The categories of different plants are mutually independent. At a lab that grows these plants, 218 are in Category A, 69 in Category B, 84 in Category C, and 29 in Category D.
Does the model look good?
Problem 1

The null hypothesis is:
The model is good.
The model isn't good.
Too many of the plants are in Category C.
The proportion of plants in Category A is expected to be 9/16; the difference in the sample is due to chance.

Problem 2

The alternative hypothesis is:
The model is good.
The model isn't good.
Too many of the plants are in Category C.
The proportion of plants in Category A is expected to be 9/16; the difference in the sample is due to chance.

Problem 3
Under the null, the expected number of plants in Category D is ______.

Problem 4
The chi-square statistic is closest to
1
1.5
2
2.5
3
3.5
4
4.5

Problem 5
Degrees of freedom = _______.

Problem 6
Based on this test, does the model look good?
Yes No

Answers

Answered by PsyDAG
We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.
Answered by Anonymous
Problem 1
The null hypothesis is:
The proportion of plants in Category A is expected to be 9/16; the difference in the sample is due to chance.

Problem 2
The alternative hypothesis is:
The model is good.

Problem 4
The chi-square statistic is closest to
2.5

Problem 5
Degrees of freedom = 3.

Problem 6
Based on this test, does the model look good?
Yes
Answered by Anonymous
Problem 3?
Answered by WalterDe
Exercise set 5 answers:
4c51a450.linkbucks

Note: add dotcom after the word linkbucks

you're welcome
Answered by Help
Thanks, Walter DE
Answered by Anonymous
@walter de u link doesn't work
Answered by stat
what's the answer?

Under the null, the expected number of plants in Category D is ______.
Answered by Cod
prob 1 - the model is good
Answered by Anonymous
what's the answer?

Under the null, the expected number of plants in Category D is ______.
Answered by Anonymous
Problem 5
Degrees of freedom = _______.
Answered by Anonymous
Problem 3, under null is 25 number of plants in Category D.
Answered by stat
thanks
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