a. Of the 20 customers of the hotel, what is the expected number who pay using the credit card? b. Of the next 10 customers, what is the probability that none pay using a credit card? c. Of the 20 customers of the hotel, compute the standard deviation of the number of customers who will pay using the credit card.
a. Of the 20 customers of the hotel, what is the expected number who pay using the credit card? b. Of the next 10 customers, what is the probability that none pay using a credit card? c. Of the 20 customers of the hotel, compute the standard deviation of the number of customers who will pay using the credit card.
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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Question
In the Marriot Hotel, 20% of the customers pay using a credit card.
a. Of the 20 customers of the hotel, what is the expected number who pay using the credit card?
b. Of the next 10 customers, what is the probability that none pay using a credit card?
c. Of the 20 customers of the hotel, compute the standard deviation of the number of customers who will pay using the credit card.
d. Of the next 10 customers, what is the probability that at least two customers pay using a credit card?
Of the next 10 customers, what is the probability that at most three customers pay using a credit card? *
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