White Blood Cell Count Claim: For adult females, the standard deviation of their
ID: 3266895 • Letter: W
Question
White Blood Cell Count Claim: For adult females, the standard deviation of their white blood cell counts is equal to 5.00. The random sample of 40 adult females in Data Set 1 from Appendix B has white blood cell counts with a standard deviation of 2.28. White Blood Cell Count Claim: For adult females, the mean of their white blood cell counts is equal to 8.00. The random sample of 40 adult females in Data Set 1 from Appendix B has white blood cell counts with a mean of 7.15 and a standard deviation of 2.28. (The population standard deviation sigma is not known.) Finding P-Values and Critical Values. In Exercises 17-24, assume that the significance level is alpha = 0.05: use the given statement and find the P-value and critical values (See Figure 8-4.) The test statistic of z = 2.00 is obtained when testing the claim that p > 0.5. The test statistic of z = -2.00 is obtained when testing the claim that pExplanation / Answer
Answer:
Critical values:
17). Upper tail test z=1.645
Reject Ho
18). Lower tail test z = -1.645
Reject Ho
19). Two tailed test z = (-1.96, 1.96)
Do not Reject Ho
20). Two tailed test z = (-1.96, 1.96)
Do not Reject Ho
21). Two tailed test z = (-1.96, 1.96)
Do not Reject Ho
22) Two tailed test z = (-1.96, 1.96)
Reject Ho
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