Asked by Adam
A statistics practitioner formulated the following hypothesis:
Ho: population mean=200
H1: population mean<200
sample mean=190
n=9
population standard deviation=50
Calculate the p-value of the test
Ho: population mean=200
H1: population mean<200
sample mean=190
n=9
population standard deviation=50
Calculate the p-value of the test
Answers
Answered by
MathGuru
Use the z-test formula to find the test statistic since you know the population standard deviation:
z = (sample mean - population mean)/(standard deviation divided by the square root of the sample size)
With the data given in the problem:
z = (190 - 200)/(50/√9)
Finish the calculation and determine the p-value using a z-table. The p-value is the actual level of the test statistic.
I hope this will help get you started.
z = (sample mean - population mean)/(standard deviation divided by the square root of the sample size)
With the data given in the problem:
z = (190 - 200)/(50/√9)
Finish the calculation and determine the p-value using a z-table. The p-value is the actual level of the test statistic.
I hope this will help get you started.
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