A computer manufacturing company claims that only 7.3% of their computers are returned. Kelly thinksthat the company is misrepresenting the true proportion of computers that are returned, and that thetrue proportion is higher than they claim. She wants to test this using a = 0.05. Kelly takes a sample of255 computers and observes that 24 are returned. Assume a normal sampling distribution.%3D(a) What are the null and alternative hypotheses?Ho: p* = : 0.073 :HA: P0.073 :(b) What is the test statistic? (Round your answer to 2 decimal places, if needed.)(c) Using the statistical table, what is the p-value? (Round your answer to 4 decimal places, if needed.)(d) Based on the p-value, Kelly should fail to reject +the null hypothesis.(e) This data does not provide : sufficient evidence to conclude that the true proportion ofcomputers is higher than claimed.Check

We have given that Sample size n=255 Favorable cases x =24 Sample proportion p^=x/n =24/255…

A computer manufacturing company claims that only 7.3% of their computers are returned. Kelly thinks that the company is misrepresenting the true proportion of computers that are returned, and that the true proportion is higher than they claim. She wants to test this using a = 0.05. Kelly takes a sample of 255 computers and observes that 24 are returned. Assume a normal sampling distribution. (a) What are the null and alternative hypotheses? Họ: p • = : 0.073 : HA: P 0.073 (b) What is the test statistic? (Round your answer to 2 decimal places, if needed.) (c) Using the statistical table, what is the p-value? (Round your answer to 4 decimal places, if needed.)

A computer manufacturing company claims that only 7.3% of their computers are returned. Kelly thinks that the company is misrepresenting the true proportion of computers that are returned, and that the true proportion is higher than they claim. She wants to test this using a = 0.05. Kelly takes a sample of 255 computers and observes that 24 are returned. Assume a normal sampling distribution. (a) What are the null and alternative hypotheses? Họ: p • = : 0.073 : HA: P 0.073 (b) What is the test statistic? (Round your answer to 2 decimal places, if needed.) (c) Using the statistical table, what is the p-value? (Round your answer to 4 decimal places, if needed.)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 2E

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