Test Statistic Identification Quiz

The sample mean is 345 and the sample size is 46.

The population is normally distributed with a standard deviation of 11.

Test the hypothesis at 0.05 level of significance.

Consider the hypotheses below: 𝐻𝑜: 𝜇=342 𝐻𝑎: 𝜇 ≠342

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Test at 𝛼= 0.05 the null hypothesis

𝐻𝑜: 𝜇=2.19 against the alternative hypothesis 𝐻𝑎: 𝜇<2.19

with 𝑛 = 18, 𝑥̅ = 1.36, and 𝑠 = 0.14.

Assume that the population is approximately normal.

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The sample size is less than 18 and the sample standard deviation is 3.67.

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𝑥̅ = 125.3

𝑠 = 5

𝜇 = 124

𝑛 = 24

𝛼= 0.05

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𝑥̅ = 25.4

𝜇 = 22.6

𝜎 = 15

𝑛 = 118

𝛼= 0.01

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