Dr. Pagels is a mammalogist who studies meadow and common voles. He frequently traps the moles and has noticed what appears to be a preference for a peanut butter-oatmeal mixture by the meadow voles vs apple slices are usually used in traps, where the common voles seem to prefer the apple slices. So he conducted a study where he used a peanut butter- oatmeal mixture in half the traps and the normal apple slices in his remaining traps to see if there was a food preference between the two different voles. Indicate which of the following is the null hypothesis, and which is the alternate hypothesis. There food preferences among vole species are independent of one another. null hypothesis There is a relationship between voles and food preference. alternate hypothesis To test for independence, we need to calculate the Chi-square statistic. These are the data that Dr. Pagels collected: meadow voles common voles apple slices peanut butter-oatmeal 26 32 35 25 • You will want to use Excel (or Google sheets) to do the calculations for you, so that your answers are exact (they need to be exact to get credit. Here is a Google sheet to get you started. • When transferring your answers, make sure you carry them out to AT LEAST SIX SIGNIFICANT FIGURES unless otherwise stated. • Round your final answer to 4 decimal places = expected meadow vole/apple slices = expected common vole/apple slices = expected meadow vole/peanut butter-oatmeal Save Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Dr. Pagels is a mammalogist who studies meadow and common voles. He frequently traps the moles and has noticed what appears to be a preference for a peanut butter-oatmeal mixture by the meadow voles vs apple slices are usually used in traps, where the common voles seem to prefer the apple slices. So he conducted a study where he used a peanut butter- oatmeal mixture in half the traps and the normal apple slices in his remaining traps to see if there was a food preference between the two different voles. Indicate which of the following is the null hypothesis, and which is the alternate hypothesis. There food preferences among vole species are independent of one another. null hypothesis There is a relationship between voles and food preference. alternate hypothesis To test for independence, we need to calculate the Chi-square statistic. These are the data that Dr. Pagels collected: meadow voles common voles apple slices peanut butter-oatmeal 26 32 35 25 • You will want to use Excel (or Google sheets) to do the calculations for you, so that your answers are exact (they need to be exact to get credit. Here is a Google sheet to get you started. • When transferring your answers, make sure you carry them out to AT LEAST SIX SIGNIFICANT FIGURES unless otherwise stated. • Round your final answer to 4 decimal places = expected meadow vole/apple slices = expected common vole/apple slices = expected meadow vole/peanut butter-oatmeal Save Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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Question
Transcribed Image Text:Question Completion Status:
Dr. Pagels is a mammalogist who studies meadow and common voles. He frequently traps the moles and has noticed what
appears to be a preference for a peanut butter-oatmeal mixture by the meadow voles vs apple slices are usually used in
traps, where the common voles seem to prefer the apple slices. So he conducted a study where he used a peanut butter-
oatmeal mixture in half the traps and the normal apple slices in his remaining traps to see if there was a food preference
between the two different voles.
Indicate which of the following is the null hypothesis, and which is the alternate hypothesis.
There food preferences among vole species are independent of one another. null hypothesis
There is a relationship between voles and food preference. alternate hypothesis
To test for independence, we need to calculate the Chi-square statistic.
These are the data that Dr. Pagels collected:
meadow voles
common voles
apple slices
26
32
peanut butter-oatmeal
35
25
• You will want to use Excel (or Google sheets) to do the calculations for you, so that your answers are exact (they need
to be exact to get credit. Here is a Google sheet to get you started.
When transferring your answers, make sure you carry them out to AT LEAST SIX SIGNIFICANT FIGURES unless
otherwise stated.
Round your final answer to 4 decimal places
= expected meadow vole/apple slices
= expected common vole/apple slices
= expected meadow vole/peanut butter-oatmeal
Save All Ans
Click Save and Submit to save and submit. Click Save All Answers to save all answers.
Transcribed Image Text:https://blackboard.vcu.edu/webapps/assessment/take/launch.jsp?course_assessment_id%3 275666_1&course_id%3_19
Copy of Pagel's Vole Stuc X
* Question Completion Status:
expected meadow vole/peanut butter-oatmeal
%3D
= expected common vole/peanut butter-oatmeal
= chi-square value
degrees of freedom (whole number only)
%3D
= using Statistical Table A (pg 704 of your textbook), what is the chi-square critical value with
significance level of X=0.05? (report exactly the value in the table)
= will you reject or fail to reject the null hypothesis? (answer either reject or fail to reject)
QUESTION 9
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