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# Show work. No excel. Null Hypothesis Ho: = 200 Alternative Hypothesis H1: 200 (Two-Tailed test) In a random sample of 100 subjects, the sample mean...

Show work. No excel.

**A.** Null Hypothesis Ho: μ = 200

Alternative Hypothesis H1: μ ≠ 200 (Two-Tailed test)

In a random sample of 100 subjects, the sample mean found to be x̅ =220.

Population standard deviation is σ=50. Significance level is α = 0.10

Calculate test statistics

For the given significance level α = 0.10, find critical values (use attached table for Normal Distribution)

**B. **Draw the line for z-scale and use critical values to identify rejection region (shade these portions)

Mark position of test statistics on your z-scale.

Does test statistics fall in the rejection region?

Will you reject or do not reject Ho?