The average score of a sample of 87 senior business majors at UTC who took the Graduate Management Admission Test was 510 with a standard deviation of 36.Provide a 98% confidence interval for the mean of the population.
(Engine Wear Narrative} Determine whether these data are sufficient to infer at the 10% significance level that the two types of engines wear differently.
. (Tire 1 − Tire 2) Rejection region: | t | > t.05,6 = 1.943 Test Statistics: t = −1.225 Conclusion: Don't reject the null hypothesis.No,these data are not sufficient to infer at the 10% significance level that the two types of engines wear differently.
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The Moose Hardware Company had net income of $60,000 and net sales of $470,000. Compute the relationship of net income to net sales. Express your answer as a percentage. (Round answer to two decimal places.)