At a = 0.05, test for the significance of the coefficient of number of salespeople. State the null and alternative hypotheses. (Enter != for as needed.) B₂=0 Ho H₂: B₂!=0 Find the value of the test statistic. (Round your answer to two decimal places.) 2.61 X Find the p-value. (Round your answer to four decimal places.) p-value = 0349 X State your conclusion. O Reject Ho. There is sufficient evidence to conclude that B₂ is significant. Do not reject Ho. There is insufficient evidence to conclude that ₂ is significant.

Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke Prevention Study asked whether adding another anticlotting drug named dipyridamole would make a difference for patients who had already had a stroke. Here are the data on strokes during the two years of the study: Aspirin alone Apsirin & Dipyridamole Number of Patients This test is two-t led. What is the test statistic? -2.700 200 = V 200 Is there a significant difference in the proportion of strokes in the two groups? Test at a = 0.05. Round your answers to three decimal places, and round any interim calculations to four decimal places. #v Fill in the hypotheses below where p₁ denotes the proportion of patients in the aspirin group who suffered a stroke and på denotes the proportion of patients in the aspirin & dipyridamole group who suffered a stroke. Ho: P₁ Ha: P₁ Number of Strokes P₂ 60 P₂ 86 Using your answer from the previous question, find the p-value. ▼ Part 2 of 4 Part 3 of 4

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Find the score that 75% of students will exceed. Consider the NAEP scores which are approximately normal N(288,38). 75% of the students will score above x on this exam. Find x.