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(b) Suppose that the test for equal variances in (a) concludes that the two populations have different variances. Is there evidence that executives in insurance (ndustry have more business lunches than those in banking industry? Following the steps below, carry out a statistical test at 5% level of significance. i. Set up appropriate hypotheses. ii. Write the formula to compute the observed value of the test statistic, which is denoted as yoba- iii. Write down the decision rule in terms of the critical value(s).

(b) Suppose that the test for equal variances in (a) concludes that the two populations have different variances. Is there evidence that executives in insurance (ndustry have more business lunches than those in banking industry? Following the steps below, carry out a statistical test at 5% level of significance. i. Set up appropriate hypotheses. ii. Write the formula to compute the observed value of the test statistic, which is denoted as yoba- iii. Write down the decision rule in terms of the critical value(s).

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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I want part b only,(make it hand written and calculations clear please)

2. A study of the number of business lunches that executives in the insurance and banking industries claim as deductible expenses per month was conducted based on random samples and yielded the following results: Insurance industry: n = 8, 1 = 9, 81 = 1.5 Banking industry: n2 = = 6, 2= 8, 82 = 3. Assume that the populations sampled are N(u1,o7) and N(42, o3), respectively. (a) Carry out a statistical test at 10% level of significance to test Ho : of = of against H, : of f ož. Write down the formula to compute the observed value of the test statistic. which is denoted as roba. Next, write down the decision rule in terms of the critical value(s). !3! (b) Suppose that the test for equal variances in (a) concludes that the two populations have different variances. Is there evidence that executives in insurance (ndustry have more business lunches than those in banking industry? Following the steps below, carry out a statistical test at 5% level of significance. i. Set up appropriate hypotheses. ii. Write the formula to compute the observed value of the test statistic, which is denoted as yoba- iii. Write down the decision rule in terms of the critical value(s).
Transcribed Image Text:2. A study of the number of business lunches that executives in the insurance and banking industries claim as deductible expenses per month was conducted based on random samples and yielded the following results: Insurance industry: n = 8, 1 = 9, 81 = 1.5 Banking industry: n2 = = 6, 2= 8, 82 = 3. Assume that the populations sampled are N(u1,o7) and N(42, o3), respectively. (a) Carry out a statistical test at 10% level of significance to test Ho : of = of against H, : of f ož. Write down the formula to compute the observed value of the test statistic. which is denoted as roba. Next, write down the decision rule in terms of the critical value(s). !3! (b) Suppose that the test for equal variances in (a) concludes that the two populations have different variances. Is there evidence that executives in insurance (ndustry have more business lunches than those in banking industry? Following the steps below, carry out a statistical test at 5% level of significance. i. Set up appropriate hypotheses. ii. Write the formula to compute the observed value of the test statistic, which is denoted as yoba- iii. Write down the decision rule in terms of the critical value(s).
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