# Hypothesis Testing - Compute the statistical test using the z

A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observations is selected from a second source. The sample mean was 99 and the standard deviation was 6. Conduct a test of the hypothesis using the .04 level of significance.

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#### Solution Preview

A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observations is selected from a second source. The sample mean was 99 and the srandard deviation was 6. Conduct a test of the hypothesis using the .04 level of significance.

Sample 1 Population ...

#### Solution Summary

The solution conducts a test of hypothesis of difference between means. It determines the significance level, z statistic, and observed difference in order to reject or fail to reject the null hypothesis. An Excel file is used.