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Consider the following hypotheses: H0: μ ≤ 63.4 HA: μ > 63.4 A sample of 26...

Consider the following hypotheses:

H0: μ ≤ 63.4

HA: μ > 63.4

A sample of 26 observations yields a sample mean of 64.6. Assume that the sample is drawn from a normal population with a known population standard deviation of 4.0. What is the value of the test statistic? Round your answer to 2 decimal places.

math   Statistics-And-Probability   
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Answer #1

Test statistics

z = - / ( / sqrt(n) )

= 64.6 - 63.4 / ( 4 / sqrt(26) )

= 1.53

The value of test statistics = 1.53

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