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A new roller coaster at an amusement park requires individuals to be at least​ 4' 8\" ​(56...

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Basic Math

A new roller coaster at an amusement park requires individualsto be at least​ 4' 8\"

​(56 inches) tall to ride. It is estimated that the heights of​10-year-old boys are normally distributed with

mu equals μ=55.0 inches and sigma equals σ=4 inches.

a. What proportion of​ 10-year-old boys is tall enough to ridethe​ coaster?

b. A smaller coaster has a height requirement of

50 inches to ride. What proportion of​ 10-year-old boys is tallenough to ride this​ coaster?

c. What proportion of​ 10-year-old boys is tall enough to ridethe coaster in part b but not tall enough to ride the coaster inpart​ a?

Answer & Explanation Solved by verified expert
4.2 Ratings (558 Votes)
55sd 4a PZ 025 1 PZ    See Answer
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