Computing test statistic to test null hypothesis

Reference no: EM1319487

Q1) How many tissues must a package of tissues contain? Researchers have found out that a person uses average of 45 tissues during a cold. Assume a random sample of 1500 people yielded following data on the number of tissues utilized during cold: xbar=32, s=17. We wish to test alternative hypothesis Ha: μ < 45. Mention the correct rejection region for α = 0.05

	Student Response	Value	Correct Answer	Feedback
A.	Reject Ho if z> 1.96 or z < -1.96.
B.	Reject Ho if z < -1.96.
C.	Reject Ho if z > 1.645.
D.	Reject Ho if z < -1.645.

Score: 0/6

Q2) We have created a 95% confidence interval for μ with result (9, 14). What conclusion will we make if we test Ho: µ=18 vs Ha: µ≠18 at α=0.05.

	Student Response	Value	Correct Answer	Feedback
A.	Accept Ho rather than Ha
B.	Fail to reject Ho
C.	We cannot tell what our decision will be with the information given.
D.	Reject Ho in favor of Ha

Score: 0/6

Q3) A sample of 9 measurements, randomly selected from normally distributed population, resulted in following summary statistics: xbar = 5.3 , s = 1.1.

	Student Response	Value	Correct Answer
Answer:	not answered	0%	2.73

Score: 0/11

Compute the appropriate Test Statistic to test null hypothesis that mean of population is 4.3 against alternative hypothesis μ ≠ 4.3.

Reference no: EM1319487

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