A study of the number of business lunches that exec-utives in the insurance and banking industries claim as deductible expenses per month was based on randomsamples and yielded the following results:n1 = 40 x1 = 9.1 s1 = 1.9n2 = 50 x2 = 8.0 s2 = 2.1 Use the four steps in the initial part of Section 1 and the0.05 level of significance to test the null hypothesis μ1 −μ2 = 0 against the alternative hypothesis μ1 − μ2 Z 0.

A study of the number of business lunches that exec-utives in the insurance and banking industries claim as deductible expenses per month was based on randomsamples and yielded the following results:n1 = 40 x1 = 9.1 s1 = 1.9n2 = 50 x2 = 8.0 s2 = 2.1 Use the four steps in the initial part of Section 1 and the0.05 level of significance to test the null hypothesis μ1 −μ2 = 0 against the alternative hypothesis μ1 − μ2 Z 0.

Name: A study of the number of business lunches that exec-utives in the insu
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A study of the number of business lunches that exec-utives in the insurance and banking industries claim asdeductible expenses per month was based on randomsamples and yielded the following results:n1 = 40 x1 = 9.1 s1 = 1.9n2 = 50 x2 = 8.0 s2 = 2.1Us

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

See similar textbooks

Similar questions

The following data on the left have been gathered from a randomized block design. Test for a significant difference in the treatment levels. Establish the hypotheses and reach a conclusion about the null hypothesis. Block. Treatment Level 1. 2 3 1 1.28 1.29 1.29 2. 1.40 1.36 1.35 3. 1.15 1.13 1.19 4 1.16 1.25 1.33
Annie is concerned over a report that "a woman over age 4040 has a better chance of being killed by a terrorist than of getting married." A study found that the likelihood of marriage for a never-previously-wed, 4040-year-old university-educated American woman was 2.9%2.9%. To demonstrate that this percentage is too small, Annie uses her resources at the Baltimore Sun to conduct a simple random sample of 516516 never-previously-wed, university-educated, American women who were single at the beginning of their 4040s and who are now 4545. Of these women, 2121 report now being married. Does this evidence support Annie’s claim, at the 0.100.10 level of significance, that the chances of getting married for this group is greater than 2.9%2.9%? Step 1 of 3 : State the null and alternative hypotheses for the test. Fill in the blank below. H0Ha: p=0.029: p⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯0.029H0: p=0.029Ha: p00000000_0.029 Answer Tables
Annie is concerned over a report that "a woman over age 4040 has a better chance of being killed by a terrorist than of getting married." A study found that the likelihood of marriage for a never-previously-wed, 4040-year-old university-educated American woman was 2.9%2.9%. To demonstrate that this percentage is too small, Annie uses her resources at the Baltimore Sun to conduct a simple random sample of 516516 never-previously-wed, university-educated, American women who were single at the beginning of their 4040s and who are now 4545. Of these women, 2121 report now being married. Does this evidence support Annie’s claim, at the 0.100.10 level of significance, that the chances of getting married for this group is greater than 2.9%2.9%? Step 2 of 3 : Compute the value of the test statistic. Round your answer to two decimal places.
In 12 test runs over a marked course, a newly designed motorboat averaged 33.6 seconds with a standard devia-tion of 2.3 seconds. Assuming that it is reasonable to treat the data as a random sample from a normal population,use the four steps in the initial part of Section 1 to testthe null hypothesis μ = 35 against the alternative μ < 35at the 0.05 level of significance.
A study was conducted simultaneously in two different communities in New York City to examine an association between variable A and variable B. The resulting analysis yielded two different p-value in the two communities? Study in Community A yielded a p-value of 0.01.Study in Community B yielded a p-value of 0.05. Which of the above values provides a stronger indictment of the null hypothesis? A. 0.01B. 0.05
A consumer electronics firm has developed a new type of remote control button that is designed to operate longer before becoming intermittent. The best button on the market lasts an average of 1200 hours. A random sample of 36 new buttons is selected and each is tested in continuous operation until becoming intermittent. The resulting lifetime of each button was recorded and found to have a sample mean of 1275 hours. 1) What is the appropriate null hypothesis? H0: 2) What is the appropriate alternative hypothesis? Ha:
A biologist was interested in determining whether specific seedlings treated with a new fertilizer resulted in a higher than average height than the standard height of 11.2 cm. The biologist treated a random sample of 24 seedlings with the fertilizer and subsequently obtained the following heights. Conduct an appropriate hypothesis test using a 5% significance level. What is the null and alternative hypothesis? What is the value of the test stastic? Please show work. 11.5 11.8 15.7 12.1 10.1 10.5 16.5 13.5 14.4 16.7 10.9 10.0 11.1 17.1 13.3 12.4 8.5 14.3 12.9 11.1 15.0 13.3 9.9 13.5
In a study of the effectiveness of a fabric device that acts like a support stocking for a weak or damaged heart, 110 people who consented to treatment were assigned at random to either a standard treatment consisting of drugs or the experimental treatment that consisted of drugs plus surgery to install the stocking. After two years, 30% of the 60 patients receiving the stocking had improved and 24% of the patients receiving the standard treatment had improved. (Use a statistical computer package to calculate the P-value. Use pexperimental − pstandard. Round your test statistic to two decimal places and your P-value to four decimal places.) z = ? P = ?