MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The medical researcher is comparing two treatments for lowering cholesterol: diet and meds. The
researcher wants to see if the patients who recelve the recommendation to change their diet have equal
success lowering cholesterol compared to a prescription of meds. A random sample of some patients who
received the recommendation to change their diet and others who were prescribed meds was taken. The
results of how many did or did not lower their cholesterol are shown below:
Data on Diet vs. Meds
for Weight Loss
Diet
Meds
Yes 346
443
No 221
260
What can be concluded at the a = 0.05 level of significance?
For this study, we should use Select an answer
a. The null and alternative hypotheses would be:
Ho: Select an answerv Select an answerv Select an answerv (please enter a decimal)
H1: Select an answerv Select an answerv Select an answerv (Please enter a decimal)
b. The test statistic ?v =
(please show your answer to 3 decimal places.)
c. The p-value =
(Please show your answer to 4 decimal places.)
d. The p-value is ? a
e. Based on this, we should Select an answerv the null hypothesis.
f. Thus, the final conclusion is that ...
O The results are statistically significant at a = 0.05, so there is sufficient evidence to conclude
that the population of all patients who received the recommendation to change their diet is
not equally likely to lower their cholesterol as the population of patients who are prescribed
meds.
O The results are statistically insignificant at a = 0.05, so we can conclude that the success rate
for all patients who receive the recommendation to change their diet is equal to the success
rate for all patients who are prescribed meds.
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Transcribed Image Text:The medical researcher is comparing two treatments for lowering cholesterol: diet and meds. The researcher wants to see if the patients who recelve the recommendation to change their diet have equal success lowering cholesterol compared to a prescription of meds. A random sample of some patients who received the recommendation to change their diet and others who were prescribed meds was taken. The results of how many did or did not lower their cholesterol are shown below: Data on Diet vs. Meds for Weight Loss Diet Meds Yes 346 443 No 221 260 What can be concluded at the a = 0.05 level of significance? For this study, we should use Select an answer a. The null and alternative hypotheses would be: Ho: Select an answerv Select an answerv Select an answerv (please enter a decimal) H1: Select an answerv Select an answerv Select an answerv (Please enter a decimal) b. The test statistic ?v = (please show your answer to 3 decimal places.) c. The p-value = (Please show your answer to 4 decimal places.) d. The p-value is ? a e. Based on this, we should Select an answerv the null hypothesis. f. Thus, the final conclusion is that ... O The results are statistically significant at a = 0.05, so there is sufficient evidence to conclude that the population of all patients who received the recommendation to change their diet is not equally likely to lower their cholesterol as the population of patients who are prescribed meds. O The results are statistically insignificant at a = 0.05, so we can conclude that the success rate for all patients who receive the recommendation to change their diet is equal to the success rate for all patients who are prescribed meds.
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