A particular telephone number is used to receive bothvoice calls and fax messages. Suppose that 25% of theincoming calls involve fax messages, and consider asample of 25 incoming calls. What is the probabilitythat a. At most 6 of the calls involve a fax message?b. Exactly 6 of the calls involve a fax message?c. At least 6 of the calls involve a fax message?d. More than 6 of the calls involve a fax message?
A particular telephone number is used to receive bothvoice calls and fax messages. Suppose that 25% of theincoming calls involve fax messages, and consider asample of 25 incoming calls. What is the probabilitythat a. At most 6 of the calls involve a fax message?b. Exactly 6 of the calls involve a fax message?c. At least 6 of the calls involve a fax message?d. More than 6 of the calls involve a fax message?
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
A particular telephone number is used to receive both
voice calls and fax messages. Suppose that 25% of the
incoming calls involve fax messages, and consider a
sample of 25 incoming calls. What is the probability
that
a. At most 6 of the calls involve a fax message?
b. Exactly 6 of the calls involve a fax message?
c. At least 6 of the calls involve a fax message?
d. More than 6 of the calls involve a fax message?
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