A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 769 hours. A random.sample of 29 light bulbs has a mean life of 756 hours. Assume the population is normally distributed and thepopulation standard deviation is 64 hours. At a = 0.02, do you have enough evidence to reject the manufacturer'sclaim? Complete parts (a) through (e).(a) Identify the null hypothesis and alternative hypothesis.OB. Ho: H=756OA. Ho: <756 (claim)Η μ2756OD. Ho: #769(claim)H₂=769(b) Identify the critical value(s). Use technology.zo =(Use a comma 1 separate answers as needed. Round to two decimal places as needed.)✓OC. Ho: μ>769H₂: μ#756 (claim)Ho: 2769 (claim)H₂H<769Ha: HS769 (claim)OF. Ho: HS756Ha: >756 (claim)

Given that Population mean = 769 Sample mean = 756 Population Standard deviation = 64 Sample size =…

Answered: A light bulb manufacturer guarantees…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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For men heights are normally distributed with a mean of 69 inches and a standard deviation of 2.8 inches. If samples of 25 men are selected at random from the population, would the average height found for each sample be more or less varied than the individual measurements taken for each man?B
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A nutritionist claims that the mean tuna consumption by a person is 3.1 pounds per year. A sample of 50 people shows that the mean tuna consumption by a person is 2.9 pounds per year. Assume the population standard deviation is 1.08 pounds. At a= 0.09, can you reject the claim? (a) Identify the null hypothesis and alternative hypothesis. OB. Ho Ha p> 2.9 OC. H, p#2.9 Ha H=2.9 µ32.9 us2.9 A. Ho H= 3.1 Ha H#3.1 OD. H, H>3.1 Ha µ53.1 OE H, s3.1 Ha p>31 OF Ho p> 2.9 Hps2.9 s. every ti s hir wing. es (b) Identify the standardized test statistic. Home z= - 1.31 (Round to two decimal places as needed.) (c) Find the P-value. ments (Round to three decimal places as needed.) book t: 0 ter Contents Clear all Check answer ltimedia Library View an example Get more help- Help me solve this zudy Plan 11:17. OK Innls for Success 68F ^@口a a 12/4/2 99+ A6 A Type here to search 10/05/17 97 PrtSc Insert Delete F10 F11 F12 F6 F7 FB F9 F1 F2 F3 F4 F5 Backspace Num Lock
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A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with H = 525. The teacher obtains a random sample of 2200 students, puts them through the review class, and finds that the mean math score of the 2200 students is 530 with a standard deviation of 119. Complete parts (a) through (d) below. C. Yes, because every increase in score is practically significant. D. No, because the score became only 0.95% greater. (d) Test the hypothesis at the a = 0.10 level of significance with n= 400 students. Assume that the sample mean is still 530 and the sample standard deviation is still 119. Is a sample mean of 530 significantly more than 525? Conduct a hypothesis test using the P-value approach. Find the test statistic. to =0 (Round to two decimal places as needed.) %3D Find the P-value. The P-value is (Round to three decimal…
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A weight loss program claims that program participants have a mean weight loss of at least 11 pounds after 1 month. You work for a medical association and are asked to test this claim. A random sample of 30 program participants and their weight losses (in pounds) after 1 month is listed in the table below. Assume the population standard deviation is 3. At a = 0.03, do you have enough evidence to reject the program's claim? Complete parts (a) through (e). 5.6 6 6.2 6.3 7.1 7.8 7.9 8.2 8.3 8.7 D 8.8 9.2 9.3 9.5 9.7 9.9 10.3 10.4 10.5 10.6 10.8 11.2 11.3 11.3 11.4 12 12.7 12.9 13.6 15.3 Identify the rejection region(s). Choose the correct answer below. A. OB. ○ C. Fail to reject Ho Q Fail to reject Ho Fail to reject Ho Reject Ho Reject Ho Reject Ho (c) Find the standardized test statistic. Z= ☐ (Round to two decimal places as needed.) Reject Ho

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