For the test of significance questions, clearly indicate each of the formal steps in the test...

For the test of significance questions, clearly indicate each of the formal steps in the test of significance.

Step 1: State the null and alternative hypothesis.
Step 2: Calculate the test statistic.
Step 3: Find the p-value.

Step 4: State your conclusion. (Do not just say “Reject H0” or “Do not reject H0”, state the conclusion in the context of the problem.)

Beetles in oats. In a study of leaf beetle damage on oats, researchers measured the number of beetle larvae per stem in small plots of oats after randomly applying one of two treatments: no pesticide or malathion at the rate of 0.25 pound per acre. Below are the summary statistics. Compute a 95% confidence interval for the difference in the mean number of beetle larvae per stem for the no pesticide group and malathion group.

Group 1: Treatment: No Pesticide Mean: 3.47 St. Dev: 1.21 n: 13

Group 2: Treatment: Malathion Mean: 1.36 St. Dev: 0.52 n: 14

Expert Solution

ANSWER::

Conclusion: There is evidence to conclude that the mean number of beetle larvae per stem for the no pesticide group is different from malathion group.

The 95% confidence interval is:

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orchestra answered 2 years ago

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For the test of significance questions, clearly indicate each of the formal steps in the test...

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