A random sample of 38 taxpayers claimed an average of $9,808 in medicalexpenses for the year. Assume the population standard deviation for thesedeductions was $2,411. Construct confidence intervals to estimate the averagededuction for the population with the levels of significance shown below.a. 1%b.5%c. 20%a. The confidence interval with a 1% level of significance has a lower limit of$ 8,801 and an upper limit of $ 10,815.(Round to the nearest dollar as needed.)b. The confidence interval with a 5% level of significance has a lower limit of$and an upper limit of $(Round to the nearest dollar as needed.)

Given ,Sample size , n = 38Mean , $9808Standard deviation , $2411We have to find the confidence…

Answered: A random sample of 38 taxpayers claimed…

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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Title a. A random sample of 25 was drawn from a normal distribution with a standard deviation of 5. The... Description a. A random sample of 25 was drawn from a normal distribution with a standard deviation of 5. The sample mean is 80. Determine the 95% confidence interval estimate of the population mean. b. Repeat part (a) with a sample size of 100. c. Repeat part (a) with a sample size of 400. d. Describe what happens to the confidence interval estimate when the sample size increases.
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