(4.20 Purchasing digital devices for children. Refer to the PC Magazine (December 2019) article on parents' opinions on the appropriate age a child should receive their first digital device, Exercise 3.20 (p. 164). Let x represent the age (in years) a parent would buy their child their first smart speaker (e.g., Amazon Echo, Google Home). Consider the probability distribution for x (adapted from the article) shown in the table. a. Verify that the probabilities in the table sum to 1. b. Find P(x < 6). c. Find P(10< x < 15). d. Find E(x) and practically interpret the value. Age (years) to Buy 1st Smart Speaker 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Probability .01 .02 .02 .02 .03 .04 .05 .08 .07 .07 .06 .09 .05 .15 .15 .09

(4.20 Purchasing digital devices for children. Refer to the PC Magazine (December 2019) article on parents' opinions on the appropriate age a child should receive their first digital device, Exercise 3.20 (p. 164). Let x represent the age (in years) a parent would buy their child their first smart speaker (e.g., Amazon Echo, Google Home). Consider the probability distribution for x (adapted from the article) shown in the table. a. Verify that the probabilities in the table sum to 1. b. Find P(x < 6). c. Find P(10< x < 15). d. Find E(x) and practically interpret the value. Age (years) to Buy 1st Smart Speaker 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Probability .01 .02 .02 .02 .03 .04 .05 .08 .07 .07 .06 .09 .05 .15 .15 .09

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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