Executives of a supermarket chain are interested in the amount of time thatcustomers spend in the stores during shopping trips. The executives hire astatistical consultant and ask her to determine the mean shopping time, µ,of customers at the supermarkets. The consultant will collect a randomsample of shopping times at the supermarkets and use the mean of theseshopping times to estimate u. Assuming that the standard deviation of the Mpopulation of shopping times at the supermarkets is 29 minutes, what is theminimum sample size she must collect in order for her to be 90% confidentthat her estimate is within s minutes of µ?Carry your intermediate computations to at least three decimal places.Write your answer as a whole number (and make sure that it is theminimum whole number that satisfies the requirements).(If necessary, consult a list of formulas.)?

The sample size can be calculated as: n=z×σE2 Here, z = desired confidence level E = The allowable…

s spend in the stores during shopping trips. TI consultant and ask her to determine the mea ers at the supermarkets. The consultant will c shopping times at the supermarkets and use times to estimate u. Assuming that the standa n of shopping times at the supermarkets is 29 urt sample size she must collect in order for her

s spend in the stores during shopping trips. TI consultant and ask her to determine the mea ers at the supermarkets. The consultant will c shopping times at the supermarkets and use times to estimate u. Assuming that the standa n of shopping times at the supermarkets is 29 urt sample size she must collect in order for her

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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