Based on a smartphone survey, assume that 47% of adults with smartphones use them in theaters. In a separate survey of 255 adults with smartphones, it is found that 117 use them in theaters. a. If the 47% rate is correct, find the probability of getting 117 or fewer smartphone owners who use them in theaters. b. Is the result of 117 significantly low? a. If the 47% rate is correct, the probability of getting 117 or fewer smartphone owners who use them in theaters is (Round to four decimal places as needed.)
Based on a smartphone survey, assume that 47% of adults with smartphones use them in theaters. In a separate survey of 255 adults with smartphones, it is found that 117 use them in theaters. a. If the 47% rate is correct, find the probability of getting 117 or fewer smartphone owners who use them in theaters. b. Is the result of 117 significantly low? a. If the 47% rate is correct, the probability of getting 117 or fewer smartphone owners who use them in theaters is (Round to four decimal places as needed.)
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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