Kindergarten Companies that design furniture for elementary school classrooms produce a variety of sizes for kids of differ- ent ages. Suppose the heights of kindergarten children can be described by a Normal model with a mean of 38.2 inches and standard deviation of 1.8 inches. a) What fraction of kindergarten kids should the company expect to be less than 3 feet tall? b) In what height interval should the company expect to find the middle 80% of kindergarteners? c) At least how tall are the biggest 10% of kindergarteners?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Only number 55
no more than 1 of every 25 customers, for what mileage can
he guarantee these tires to last?
55. Kindergarten Companies that design furniture for elementary
school classrooms produce a variety of sizes for kids of differ-
ent ages. Suppose the heights of kindergarten children can be
described by a Normal model with a mean of 38.2 inches and
standard deviation of 1.8 inches.
a) What fraction of kindergarten kids should the company
expect to be less than 3 feet tall?
b) In what height interval should the company expect to find
the middle 80% of kindergarteners?
c) At least how tall are the biggest 10% of kindergarteners?
56. Body temperatures Most people think that the "normal"
adult body temperature is 98.6°F. That figure, based on a
19th-century study, has recently been challenged, In a 1992
article in the Journal of the American Medical Association,
Transcribed Image Text:no more than 1 of every 25 customers, for what mileage can he guarantee these tires to last? 55. Kindergarten Companies that design furniture for elementary school classrooms produce a variety of sizes for kids of differ- ent ages. Suppose the heights of kindergarten children can be described by a Normal model with a mean of 38.2 inches and standard deviation of 1.8 inches. a) What fraction of kindergarten kids should the company expect to be less than 3 feet tall? b) In what height interval should the company expect to find the middle 80% of kindergarteners? c) At least how tall are the biggest 10% of kindergarteners? 56. Body temperatures Most people think that the "normal" adult body temperature is 98.6°F. That figure, based on a 19th-century study, has recently been challenged, In a 1992 article in the Journal of the American Medical Association,
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