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Someone claims that the mean number of sick days that employees in New Jersey take per...

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Question

Basic Math

Someone claims that the mean number of sick days that employeesin New Jersey take per year is 5.3. To look into that claim, youtake a representative sample of 78 employees in New Jersey and findthat the mean number of sick days is 5.5 in the sample. Thepopulation standard deviation is 1.6.

Part (a)   

Given that the sample mean is different from the claimedpopulation mean, does that show that the claim in H0 isfalse? Explain your answer.

Part (b)

Carry out a hypothesis test for the claim above (with α = 0.05)using the 6-step procedure.

Part (c)   

Carry out a hypothesis test for the claim above (with α = 0.05)using the p-value method.

Answer & Explanation Solved by verified expert
3.9 Ratings (392 Votes)
H0 53H1 53a No it does not show that H0 is false because without doingany hypothesis test we cannot show that H0    See Answer
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