1 answer

A researcher wants to conduct a hypothesis test to determine if the mean miles per gallon...

Question:

A researcher wants to conduct a hypothesis test to determine if the mean miles per gallon of a certain car is above 25 miles
A researcher wants to conduct a hypothesis test to determine if the mean miles per gallon of a certain car is above 25 miles per gallon. They calculate a test statistic of z = 1.74. What is the p-value of the test?

Answers

Solution:
Given that,  
H0 : μ<=25 and H1:μ>25
Z= 1.74
The p value can be calculated as,
P value = P(Z>1.75)
=1-P(Z<=1.75)
=1-0.9591
=0.0409

.

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