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uppose 4-year- unsu day unsupervised reas, considered safe. Suppose that the standard deviation is 1.8 hours and the amount of time spent alone is normally distributed. e randomly survey one 4-year-old living in a rural area. We are interested in the amount of time the child spends alone per day. O Part (a) O Part (b) O Part (c) Find the probability that the child spends less than 1 hour per day unsupervised. Write the probability statement. Px< 1700 What is the probability? (Round your answer to four decimal places.)

uppose 4-year- unsu day unsupervised reas, considered safe. Suppose that the standard deviation is 1.8 hours and the amount of time spent alone is normally distributed. e randomly survey one 4-year-old living in a rural area. We are interested in the amount of time the child spends alone per day. O Part (a) O Part (b) O Part (c) Find the probability that the child spends less than 1 hour per day unsupervised. Write the probability statement. Px< 1700 What is the probability? (Round your answer to four decimal places.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Suppose 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.8 hours and the amount of time spent alone is normally distributed. We randomly survey one 4-year-old living in a rural area. We are interested in the amount of time the child spends alone per day. O Part (a) O Part (b) O Part (c) Find the probability that the child spends less than 1 hour per day unsupervised. Write the probability statement. x< 1700 What is the probability? (Round your answer to four decimal places.) 0.3256 Sketch the graph. X 10 -4 -2 2 4 6 8 -4 -2 2 4 8 10 X 10 X 10 -4 -2 2 4 6 8 6 8 O Part (d) What percent of the children spend over 10 hours per day unsupervised? (Round your answer to four decimal places.) 0.1379 X % O Part (e) 90% of the children spend at least how long per day unsupervised? (Round your answer to two decimal places.) 2346 X hours
Transcribed Image Text:Suppose 4-year-olds in a certain country average 3 hours a day unsupervised and that most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.8 hours and the amount of time spent alone is normally distributed. We randomly survey one 4-year-old living in a rural area. We are interested in the amount of time the child spends alone per day. O Part (a) O Part (b) O Part (c) Find the probability that the child spends less than 1 hour per day unsupervised. Write the probability statement. x< 1700 What is the probability? (Round your answer to four decimal places.) 0.3256 Sketch the graph. X 10 -4 -2 2 4 6 8 -4 -2 2 4 8 10 X 10 X 10 -4 -2 2 4 6 8 6 8 O Part (d) What percent of the children spend over 10 hours per day unsupervised? (Round your answer to four decimal places.) 0.1379 X % O Part (e) 90% of the children spend at least how long per day unsupervised? (Round your answer to two decimal places.) 2346 X hours
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