It is known that 40% of all customersat a service station pay with a creditcard. If a random sample of 200customers is selected and 75 of themfound to pay by credit card, calculatethe sampling error of proportion.O A. 0.025O B. -0.025O C. 0.7217O D. -0.7217

Answered: It is known that 40% of all customers…

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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It is known that 40% of all customers at a service station pay with a credit card. If a random sample of 200 customers is selected and 75 of them found to pay by credit card, calculate the sampling error of proportion. O A. 0.025 O B. -0.025 O C. 0.7217 O D. -0.7217