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Find the standardized test statistic t for a sample with n = 12, x(sample mean) =...

Find the standardized test statistic t for a sample with n = 12, x(sample mean) = 24, s = 2.1, and α = 0.01 if Ha: μ ≠ 24.5. Round your answer to three decimal places.

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Answer #1

Solution :

This is the two tailed test .

The null and alternative hypothesis is ,

H0 :   =24.5

Ha : 24.5

Test statistic = t

= ( - ) / s / n

= (24-24.5) / 2.1/ 12

Test statistic = -0.823

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