Then the mean number (to the nearest whole number) of students who will finish the exam in less than 1 hour for 14 students randomly selected is equal to:

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Question
Question*
The time taken by a student to finish a statistics exam can be modeled using the following
cumulative distribution function:
F(x)% = 1-e-0.9x x> 0
Suppose that the time taken for a student to finish the exam is constant from student to
student.
Then the mean number (to the nearest whole number) of students who will finish the exam
in less than 1 hour for 14 students randomly selected is equal to:
6.
O None of the other options
8.
Question
The joint probability distribution function of a discrete random vaiable is
f(x. y) cx'y for x-1. 23 and y-1 4 16 c 0
Then P(1 X <3Y = 1)
Transcribed Image Text:Question* The time taken by a student to finish a statistics exam can be modeled using the following cumulative distribution function: F(x)% = 1-e-0.9x x> 0 Suppose that the time taken for a student to finish the exam is constant from student to student. Then the mean number (to the nearest whole number) of students who will finish the exam in less than 1 hour for 14 students randomly selected is equal to: 6. O None of the other options 8. Question The joint probability distribution function of a discrete random vaiable is f(x. y) cx'y for x-1. 23 and y-1 4 16 c 0 Then P(1 X <3Y = 1)
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