Answered: On the planet of Mercury, 4-year-olds average 2.9 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that…

Name: On the planet of Mercury, 4-year-olds average 2.9 hours a day unsuperv
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Description: On the planet of Mercury, 4-year-olds average 2.9 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.4 hours and the amount of time spent alone is normally distri

MATLAB: An Introduction with Applications

6th Edition

ISBN: 9781119256830

Author: Amos Gilat

Publisher: John Wiley & Sons Inc

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Question

On the planet of Mercury, 4-year-olds average 2.9 hours a day unsupervised. Most of the unsupervised children live in rural areas, considered safe. Suppose that the standard deviation is 1.4 hours and the amount of time spent alone is normally distributed. We randomly survey one Mercurian 4-year-old living in a rural area. We are interested in the amount of time X the child spends alone per day. (Source: San Jose Mercury News) Round all answers to 4 decimal places where possible.

PLEASE ROUND TO 4 DECIMAL PLACES!

b. Find the probability that the child spends less than 2.5 hours per day unsupervised.

c. What percent of the children spend over 2.5 hours per day unsupervised. % (Round to 2 decimal places)

d. 76% of all children spend at least how many hours per day unsupervised? hours.

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