Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a newspaper article, the mean of the x distribution is about $24 and the estimated standard deviation is about $9. Consider a random sample ofn = 40 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. The sampling distribution of x is approximately normal with mean u, = 24 and standard error o, = $1.42. It is not necessary to make any assumption about the distribution because n is large. Let us assume that x has a distribution that is approximately normal. What is the probability that x is between $21 and $27? (Round your answer to four decimal places.)

Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a newspaper article, the mean of the x distribution is about $24 and the estimated standard deviation is about $9. Consider a random sample ofn = 40 customers, each of whom has 10 minutes of unplanned shopping time in a supermarket. The sampling distribution of x is approximately normal with mean u, = 24 and standard error o, = $1.42. It is not necessary to make any assumption about the distribution because n is large. Let us assume that x has a distribution that is approximately normal. What is the probability that x is between $21 and $27? (Round your answer to four decimal places.)

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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