Find a confidence interval for μorp.a. A random sample of 14 adults participated in a four-month weight loss program. Their meanweight loss was 12.5 lbs, with a standard deviation of 3 lbs. Use this sample data to construct a 95%confidence interval for the population mean weight loss for all adults using this four-monthprogram. You may assume the parent population is normally distributed. Round to one decimalplace.]<µ<|b. In the year 2000, a survey of 1019 U.S. adults were asked who they felt was the greatestPresident. Of those surveyed, 218 reported that Abraham Lincoln was the greatest President. Usethis data to construct a 95% confidence interval for the population proportion of all U.S. adults whowould say that Abraham Lincoln was the greatest president before the year 2000. Answer usingdecimals and round to four decimal places

Answered: Find a confidence interval for μorp. a.…

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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See pictures for question D and E and (A, B and Cand was submitted on a different question. According to a report done by S & J Power, the mean lifetime of the light bulbs it manufactures is 44 months. A researcher for a consumer advocate group tests this by selecting 16 bulbs at random. For the bulbs in the sample, the mean lifetime is 47 months. It is known that the population standard deviation of the lifetimes is 5 months. Assume that the population is normally distributed. Can we conclude, at the 0.10 level of significance, that the population mean lifetime, μ, of light bulbs made by this manufacturer differs from 44 months? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places, and round your responses as specified below.
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