Steele Electronics Inc. sells expensive brands of stereo equipment in several shopping malls. The marketing research department of Steele reports that 33% of the customers entering the store that indicate they are browsing will, in the end, make a purchase. Let the last 23 customers who enter the store be a sample. a. How many of these customers would you expect to make a purchase? (Round the final answer to the nearest whole number.) Number of customer......... b. What is the probability that exactly five of these customers make a purchase? (Round the final answer to 4 decimal places.) c. What is the probability 13 or more make a purchase? (Round the final answer to 4 decimal places.) d. Does it seem likely at least one will make a purchase ("likely" refers if the probability is more than 70%)? Yes or No
Steele Electronics Inc. sells expensive brands of stereo equipment in several shopping malls. The marketing research department of Steele reports that 33% of the customers entering the store that indicate they are browsing will, in the end, make a purchase. Let the last 23 customers who enter the store be a sample. a. How many of these customers would you expect to make a purchase? (Round the final answer to the nearest whole number.) Number of customer......... b. What is the probability that exactly five of these customers make a purchase? (Round the final answer to 4 decimal places.) c. What is the probability 13 or more make a purchase? (Round the final answer to 4 decimal places.) d. Does it seem likely at least one will make a purchase ("likely" refers if the probability is more than 70%)? Yes or No
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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Steele Electronics Inc. sells expensive brands of stereo equipment in several shopping malls. The marketing research department of Steele reports that 33% of the customers entering the store that indicate they are browsing will, in the end, make a purchase. Let the last 23 customers who enter the store be a sample.
a. How many of these customers would you expect to make a purchase? (Round the final answer to the nearest whole number.)
Number of customer.........
b. What is the probability that exactly five of these customers make a purchase? (Round the final answer to 4 decimal places.)
c. What is the probability 13 or more make a purchase? (Round the final answer to 4 decimal places.)
d. Does it seem likely at least one will make a purchase ("likely" refers if the probability is more than 70%)? Yes or No
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