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.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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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.
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