To determine what effect the salespeople had on purchases, a department store polled 700 shoppers as to whether or not they had made a purchase and whether or not they were pleased with the service. Of those who had made a purchase, 130 were happy with the service and 118 were not. Of those who had made no purchase, 140 were happy with the service and 312 were not. Find the probability that a shopper who was happy with the service had made a purchase (round off to the nearest hundredth). _____ What can you conclude? (Round your answer to the nearest whole number.) _____ About ____% of those who were happy with the service made a purchase.

To determine what effect the salespeople had on purchases, a department store polled 700 shoppers as to whether or not they had made a purchase and whether or not they were pleased with the service. Of those who had made a purchase, 130 were happy with the service and 118 were not. Of those who had made no purchase, 140 were happy with the service and 312 were not. Find the probability that a shopper who was happy with the service had made a purchase (round off to the nearest hundredth). ___ What can you conclude? (Round your answer to the nearest whole number.) _ About __% of those who were happy with the service made a purchase.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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