QUESTION 4

The following random sample of 6 observations was collected for testing whether the average time spent in moderate exercise of a population per week is different from 4 hours or not. 5 6 6 2 9 7 Perform the test at 5% level of significance. Use statistical software to perform all the tests and computations. (There are two correct choices. No partial credit for this question.)

	A.	The standard error of the mean in this test is 2.32.
	B.	Thenormality test from statistical softwareused for our class wouldsuggest that the normality is an acceptable assumption for this data.
	C.	The p-value of this test is less than 0.05.
	D.	There is no statistically significant evidence to support that the average hours of exercise per week for this population is different from 4.

4 points

QUESTION 5

In a random sample from a population, 280 out of the sample of 500 subjects responded "Yes" to a survey question. Researchers used this data to test whether the percentage of people in this population who would vote for "Yes" is different from 55%, at 5% level of significance using Chi-square goodness of fit test. Which of the followings are correct? (There are two correct choices. No partial credit for this question.)

	A.	The p-value from the test is 0.008.
	B.	The p-value from the test is 0.653.
	C.	There is sufficient evidence to support that the percentage of people in this population who would vote for "Yes" is different from 55%,
	D.	There is no sufficient evidence to support that the percentage of people in this population who would vote for "Yes" is different from 55%,