A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like to estimate the mean monthlymileage, , of cars rented in the U.S. over the past year. The consumer group plans to choose a random sampie of monthly U.S. rental car mileages and thenestimate u using the mean of the sample.Using the value 750 miles per month as the standard deviation of monthly U.S. rental car mileages from the pest yeac what is he minimum sample size neededin order for the consumer group to be 95% confident that its estimate is within 150 miles per month ofCarry your Intermediate computations to at least three decimal places. Wrte your anewer as whole number (and meke ure that it the minimum wholenumber that satisfies the requirements).(If necessary, consulta list of formulas)You would like to construct a 90% confidence interval to estimate the population mean annual income for people over age 40e your state You choose arandom sample of such incomes and compute the mean of the sample as 40,785.5 dollars with a standard deviation of 7538.1 dollars(a) What is the best point estimate, based on the sample, to use for the population mean(b) For each of the folowing sampling scenarios, determine which distribution should be used to calculate the criticel valuefor the 90% confidence interval for the population mean.(In the table, Z refers to a standard normal distribution, and I refers to at distribution.)Could useSampling scenarioUncleareither ZorThe sample has sze 12, and it is froma normally distributedpopulation with a known standerd devietion of7564.The sample has sie 17, and it is from a normaly distributedpopulation with an unknown standard deviation.The sample has sie 110, and it is from a non-normaly datributedpopulation

Note: Please repost 2nd question as i can answer only 1 question as per my policy.

A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would to utimate the mileage, . of cars rented in the U.S. over the past year. The consumer group plans to choose a random sample of monthly U.S rental car mi estimate using the mean of the sample. Using the value 750 miles per month as the standard deviation of monthily u.S. rental car mileages from the pest yea what the minimum s in order for the consumer group to be 95% confident that its estimate is within 150 miles per month of Carry your intermediate computations to at least three decimal places. Wte your anewer as whoe mber land me athe m number that satisfies the requirements). (f necessary, consult a lat of formulas)

A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would to utimate the mileage, . of cars rented in the U.S. over the past year. The consumer group plans to choose a random sample of monthly U.S rental car mi estimate using the mean of the sample. Using the value 750 miles per month as the standard deviation of monthily u.S. rental car mileages from the pest yea what the minimum s in order for the consumer group to be 95% confident that its estimate is within 150 miles per month of Carry your intermediate computations to at least three decimal places. Wte your anewer as whoe mber land me athe m number that satisfies the requirements). (f necessary, consult a lat of formulas)

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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