Based on a smartphone survey, assume that 40% of adults with smartphones use them in theaters. In a separate survey of 228 adults with smartphones, it is found that 76 use them in theaters. a. If the 40% rate is correct, find the probability of getting 76 or fewer smartphone owners who use them in theaters. b. Is the result of 76 significantly low? a. If the 40% rate is correct, the probability of getting 76 or fewer smartphone owners who use them in theaters is (Round to four decimal places as needed.)

Based on a smartphone survey, assume that 40% of adults with smartphones use them in theaters. In a separate survey of 228 adults with smartphones, it is found that 76 use them in theaters. a. If the 40% rate is correct, find the probability of getting 76 or fewer smartphone owners who use them in theaters. b. Is the result of 76 significantly low? a. If the 40% rate is correct, the probability of getting 76 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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