What should I buy? A study conducted by a research group in a recent year reported that 30% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 13 cell phone owners is studied. Round the answers to at least four decimal places. Part 1 of 4 (a) What is the probability that six or more of them used their phones for guidance on purchasing decisions? The probability that six or more of them used their phones for guidance on purchasing decisions is Part 2 of 4 (b) What is the probability that fewer than nine of them used their phones for guidance on purchasing decisions? The probability that fewer than nine of them used their phones for guidance on purchasing decisions is Part 3 of 4 (c) What is the probability that exactly seven of them used their phones for guidance on purchasing decisions? The probability that exactly seven of them used their phones for guidance on purchasing decisions is X
What should I buy? A study conducted by a research group in a recent year reported that 30% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 13 cell phone owners is studied. Round the answers to at least four decimal places. Part 1 of 4 (a) What is the probability that six or more of them used their phones for guidance on purchasing decisions? The probability that six or more of them used their phones for guidance on purchasing decisions is Part 2 of 4 (b) What is the probability that fewer than nine of them used their phones for guidance on purchasing decisions? The probability that fewer than nine of them used their phones for guidance on purchasing decisions is Part 3 of 4 (c) What is the probability that exactly seven of them used their phones for guidance on purchasing decisions? The probability that exactly seven of them used their phones for guidance on purchasing decisions is X
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 50E: Flexible Work Hours In a recent survey, people were asked whether they would prefer to work flexible...
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Transcribed Image Text:What should I buy? A study conducted by a research group in a recent year reported that 30% of cell phone owners used their phones inside a store for
guidance on purchasing decisions. A sample of 13 cell phone owners is studied. Round the answers to at least four decimal places.
Part 1 of 4
(a) What is the probability that six or more them used their phones for guidance on purchasing decisions?
The probability that six or more of them used their phones for guidance on purchasing decisions is
Part 2 of 4
(b) What is the probability that fewer than nine of them used their phones for guidance on purchasing decisions?
The probability that fewer than nine of them used their phones for guidance on purchasing decisions is
Part 3 of 4
(c) What is the probability that exactly seven of them used their phones for guidance on purchasing decisions?
The probability that exactly seven of them used their phones for guidance on purchasing decisions is
Part 4 of 4
X
X
X
(d) Would it be unusual if more than 11 of them used their phones for guidance on purchasing decisions?
It (Choose one) be unusual if more than 11 of them used their phones for guidance on purchasing decisions since the
probability is
5
Ś
X
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