Answered: (e) State the decision rule: Reject HO…

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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I’m having trouble answering some parts of this question. Please help me out! Part e, f, g Thank you so much

Transcribed Image Text:Nassau Community College uses thousands of fluorescent light bulbs each year. The brand of bulb it currently uses has a mean life of 848 hours with a population standard deviation of 72 hours. A manufacturer claims that its new brand of bulbs, which cost the same as the brand the college currently uses, has a mean life of more than 848 hours. The college has decided to purchase the new brand if, when tested, the test evidence supports the manufacturer's claim at the 1% significance level. Suppose 49 bulbs were tested and the mean life was found to be 866. Complete the steps of a hypothesis test below, and then answer the question, "should the college purchase the new brand of light bulbs?" (a) State the hypotheses: Ho: The population mean O light bulb life is equal to 848 f hours. Symbols: O lp, -O H,0 1 - 20 Hz z,0 pL,O µ o=v 848 Ha: The population mean vV o light bulb life is more than 848 * hours. Symbols: 848 (b) The correct symbol for the mean of the sampling distribution is: OPi - P2 O Hp, -Pa Op O Hp Or Oi - E2 O uz hp esc 12 # No 24 & 7 3 4. 8 y T. YH K

Transcribed Image Text:(e) State the decision rule: Reject HO and accept Ha v o at a = % if the p-value of the sample statistic O is Select an answer (f) Experiment: Symbol of the sample statistic: Ox Or O Pz Op Op Value of the sample statistic: P-value of the sample statistic rounded to 4 decimal places: (g) Conclusion: Fail to reject H0 vV o at a = (h) Answer the question: Should the college purchase the new brand of light bulbs? O Yes, because the p-value is less than alpha. O No, because p-value is greater than alpha. O Yes, because the p-value is greater than alpha. hp

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