A researcher wonders if there an association between the incidence of colds and the amount of Vitamin C taken. He recruits 87 volunteers and randomly assigns 26 of them to take 500 mg of Vitamin C, 15 of them to take 1000 mg of Vitamin C and the rest to take no Vitamin C. At the end of the study, it was determined that 25 of the volunteers did not have any colds where 12 of them were in the 500 mg group, 8 of them were in the 1000 mg group, and the rest took no Vitamin C. Test the appropriate hypothesis at a = 0.05. Round your answers to three decimal places, if necessary. Fill in the hypotheses below: Ho: There is not vitamin C taken. Ha : There is vitamin C taken. Complete the table of expected counts under the null hypothesis: No Vitamin C 500mg Vitamin C 1000mg Vitamin C No Vitamin C 500mg Vitamin C 1000mg Vitamin C At least one cold 32.782 18.529 10.69 an association between the incidence of colds and the amount of an association between the incidence of colds and the amount of Using your previous answers, complete the table of contributions to the test statistic: At least one cold 2.06 5.110 1.274 No colds X 13.218 7.471 10.69 No colds 5.109 2.746 3.159 What is the test statistic? Hint: How do you get from the contributions to the test statistic to the test statistic? 15.454 x ▼ Part 2 of 5 Part 3 of 5
A researcher wonders if there an association between the incidence of colds and the amount of Vitamin C taken. He recruits 87 volunteers and randomly assigns 26 of them to take 500 mg of Vitamin C, 15 of them to take 1000 mg of Vitamin C and the rest to take no Vitamin C. At the end of the study, it was determined that 25 of the volunteers did not have any colds where 12 of them were in the 500 mg group, 8 of them were in the 1000 mg group, and the rest took no Vitamin C. Test the appropriate hypothesis at a = 0.05. Round your answers to three decimal places, if necessary. Fill in the hypotheses below: Ho: There is not vitamin C taken. Ha : There is vitamin C taken. Complete the table of expected counts under the null hypothesis: No Vitamin C 500mg Vitamin C 1000mg Vitamin C No Vitamin C 500mg Vitamin C 1000mg Vitamin C At least one cold 32.782 18.529 10.69 an association between the incidence of colds and the amount of an association between the incidence of colds and the amount of Using your previous answers, complete the table of contributions to the test statistic: At least one cold 2.06 5.110 1.274 No colds X 13.218 7.471 10.69 No colds 5.109 2.746 3.159 What is the test statistic? Hint: How do you get from the contributions to the test statistic to the test statistic? 15.454 x ▼ Part 2 of 5 Part 3 of 5
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:A researcher wonders if there an association between the incidence of colds and the amount of Vitamin C
taken. He recruits 87 volunteers and randomly assigns 26 of them to take 500 mg of Vitamin C, 15 of them
to take 1000 mg of Vitamin C and the rest to take no Vitamin C. At the end of the study, it was determined
that 25 of the volunteers did not have any colds where 12 of them were in the 500 mg group, 8 of them
were in the 1000 mg group, and the rest took no Vitamin C.
Test the appropriate hypothesis at a = 0.05. Round your answers to three decimal places, if necessary.
Fill in the hypotheses below:
Ho: There is not
vitamin C taken.
Ha : There is
vitamin C taken.
Complete the table of expected counts under the null hypothesis:
No Vitamin C
500mg Vitamin C
1000mg Vitamin C
No Vitamin C
500mg Vitamin C
1000mg Vitamin C
At least one cold
32.782
an association between the incidence of colds and the amount of
an association between the incidence of colds and the amount of
18.529
10.69
Using your previous answers, complete the table of contributions to the test statistic:
At least one cold
2.06
5.110
1.274
No colds
X
13.218
7.471
10.69
No colds
5.109
2.746
3.159
What is the test statistic?
Hint: How do you get from the contributions to the test statistic to the test statistic?
15.454 X
▼ Part 2 of 5
Part 3 of 5
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