For D only In China, 4-year-olds average 3 hours a day unsupervised. Most of theunsupervised children live in rural areas, considered safe. Suppose that thestandard deviation is 1.5 hours and the amount of time spent alone is normallydistributed. We randomly survey one Chinese 4-year-old living in a rural area. Weare interested in the amount of time X the child spends alone per day. (Source:San Jose Mercury News) Round all answers to two decimal places.A. X~ N 3B. Find the probability that the child spends less than 2 hours per dayunsupervised. 0.251.5C. What percent of the children spend over 12 hours per day unsupervised?0.01percent.D. 60 percent of all children spend at least how many hours per dayunsupervised?hours.

Given that X ~ N ( μ = 3 , σ = 1.5 ) μ = 3 , σ= 1.5 Formula for Z-score Z = ( X - μ ) / σ

Answered: D. 60 percent of all children spend at…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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D. 60 percent of all children spend at least how many hours per day unsupervised? hours.