If 80% of the applicants rae able to pss a driver’s proficiency road test, find the mean, variance and standard deviation of the number of people who pass the test in a sample

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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5. If 80% of the applicants rae able to pss a driver’s proficiency road test, find the mean,

variance and standard deviation of the number of people who pass the test in a sample

of 300 applicants.

6. The probability that an entering college student will graduate is 0.6. Determine that out

of 4 students

a. All will graduate

b. Atleast 1 will graduate

7. A telephone operator receives 3 calls per hour. Find the probability that he will receive

a. At most 3 calls

b. Atleast 4 calls

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