Rapid Eye Movement (REM) sleep is the sleep when a person has dreams. A researcher wants toinvestigate whether children have more REM than adults. She selects a random sample of 10 children andobtained a mean of 2.9 hours and standard deviation of 0.48 hours for the duration of REM sleep. She alsoselected a random sample of 10 adults and the mean and standard deviation of the duration of their REM sleep8.were 2.1 hours and 0.68 hours.A.than the average REM for adults? Use the p-value method.At a = 0.05, is there enough evidence to conclude that the average REM for children is higherВ.Find the 95% confidence interval for the difference between the average REM for children andthe average REM for adults. Interpret your results.

Given Data : For Sample 1 x̄1 = 2.9 s1 = 0.48 n1 = 10 For Sample 2…

Answered: investigate whether children have more…

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 psychologist is studying smokers' self-images, which she measures by the self-image (SI) score from a personality inventory. For adults in the U.S., the mean SI score from this inventory is about 150. The psychologist gathers a random sample of 16 SI scores of smokers and finds that their mean is 130 and their standard deviation is 31. Assume that the population of SI scores of smokers is normally distributed with mean μ. Based on the sample, can the psychologist conclude that μ is different from 150? Use the 0.05 level of significance. Perform a two-tailed test. Then fill in the table attached. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table.

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