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H0: mean =9 H1: mean >9 A test is preformed with a sample of size 49....

H0: mean =9

H1: mean >9

A test is preformed with a sample of size 49. The sample mean was 13.3 and the population standard deviation is 14. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. Write only a number as your answer.

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Answer #1

Given that, sample size (n) = 49

sample mean = 13.3

population standard deviation = 14

The null and alternative hypotheses are,

Test statistic is,

p-value=P(Z > 2.15)= 1 - P(Z < 2.15) = 1 - 0.9842 = 0.0158

=> p-value = 0.0158

TI-83 plus calculator output is shown in below image:

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