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Suppose, the walking speed of an elderly is no more than 6 km per hour. The walking speed, Y, in km per hour can be shown to have the following PDF 0

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.1: Measures Of Center

Problem 9PPS

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Question

5:05
493% i
Suppose, the walking speed of an elderly is no more than 6 km per hour. The walking speed, Y, in km per hour can be shown to have the following PDF
0 <y<4
18
f (Y = y)
y- 4<y<6
otherwise
a. What is the probability that the walking speed of some elderly person is at most 5 km per hour?
Answer in exact fraction or rounded to at least 4 decimal places
b. What is the probability that the walking speed of an elderly person is less than 3 km per hour or more than 4 km per hour?
Answer in exact fraction or rounded to at least 4 decimal places
c. What is the expected walking speed of an elderly person?
Answer in exact fraction or rounded to at least 4 decimal places

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