A sample of 1300 computer chips revealed that 43% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature claimed thatmore than 40% do not fail in the first 1000 hours of their use. Is there sufficient evidence at the 0.10 level to support the company's claim?State the null and alternative hypotheses for the above scenario.

In hypothesis testing, we start by defining the null hypothesis (H0) and the alternative hypothesis…

Answered: A sample of 1300 computer chips…

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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A large programming "bootcamp" claims that 90% of students who complete the bootcamp find employment within one month of graduation. An independent watchdog organization decides to evaluate this claim. They take a simple random sample of 100 students who have completed the bootcamp in the last five years. Of these, 78 say they found employment within one month of graduation. (a) What are the null and alternative hypotheses in terms of the original problem? Null hypothesis: Alternative hypothesis: (b) Write down what the box model looks like if the null hypothesis is true. (c) Calculate the z test statistic based on the information given. (Note: You may use either the sample percentage or the sum of draws as your test statistic. You should get the same answer either way.) Z = (d) Now calculate the p-value. p = (e) What should the organization conclude based on this test? Specifically, is there enough evidence to reject the company's claim? YES or NO
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A large programming “bootcamp” claims that 90% of students who complete the bootcamp find employment within one month of graduation. An independent watchdog organization decides to evaluate this claim. They take a simple random sample of 100 students who have completed the bootcamp in the last five years. Of these, 78 say they found employment within one month of graduation.(a) What are the null and alternative hypotheses in terms of the original problem?   Null hypothesis:    Alternative hypothesis:    (b) Write down what the box model looks like if the null hypothesis is true.      (c) Calculate the z test statistic based on the information given. (Note: You may use either the sample percentage or the sum of draws as your test statistic. You should get the same answer either way.) z = _______        (d) Now calculate the p-value. p = _______        (e) What should the organization conclude based on this test? Specifically, is there enough evidence to reject the company’s claim?  YES…

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