Question

Use the following information for the next 7 questions:

A simple random sample of 50 adults is obtained and each person's red blood cell count (in cells per microfilter) is obtained. The sample mean in 4.63. The population standard deviation for all blood cell counts is assumed to be 0.54. Test at the .05 level whether the population mean blood count is less than 5.

Question 8: The data summary here is n=50 and x= 4.63

A. s= 0.54

B. o= 0.54

C. ^p= 0.54

D. p= 0.54

Question 9: the alternative hypothesis for this problem is?

Question 10: Which command in stat crunch do you use here?

A. Z stat

B. T stat

C.Proportion stats

D. Variance stats

Question 11: Calculate the p-value for this problem.

Question 12: The conclusion to this problem, in terms of the null hypothesis is?

A. Reject the null hypothesis

B. Do not reject the null hypothesis

Question 13: The conclusion to this problem in english is

A. The mean blood count is less than 5

B. The mean blood count is greater than 5

C. The mean blood count is equal to 5

D. The mean blood count is not equal to 5

Question 14: Calculate the 95% confidence interval for the mean red cell count. Does your confidence interval contain the number 5?

A. Yes

B. No

Answer 1

Question 8:

The data summary here is n=50 and x= 4.63

S = 0.54

Option - (A)

Question 9:

The alternative hypothesis Ha:

Question 10:

I will use Z stat command in stat crunch.

Option - (A)

Question 11:

Reject the null hypothesis.

Option - (A)

Question 11:

The conclusion to this problem in English is the mean blood count is less than 5.

Question 12:

95% Confidence Interval: 4.63 ± 0.15 = (4.48 to 4.78)

No, confidence interval does not contain the number 5.

Option - (B)