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S A test consists of 90 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers. A) mean: 45; standard deviation: 6.71 B) mean: 18; standard deviation: 4.24 D) mean: 45; standard deviation: 3.79 C) mean: 18; standard deviation: 3.79 b A test consists of 10 multiple choice questions, each with five possible answers, one of which is correct. To pass the test a student must get 60% or better on the test. If a student randomly guesses, what is the probability that the student will pass the test? A) 0.205 B) 0.006 C) 0.377 D) 0.060

S A test consists of 90 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers. A) mean: 45; standard deviation: 6.71 B) mean: 18; standard deviation: 4.24 D) mean: 45; standard deviation: 3.79 C) mean: 18; standard deviation: 3.79 b A test consists of 10 multiple choice questions, each with five possible answers, one of which is correct. To pass the test a student must get 60% or better on the test. If a student randomly guesses, what is the probability that the student will pass the test? A) 0.205 B) 0.006 C) 0.377 D) 0.060

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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3 0.03 4 0.01 A) mean: 1.23; standard deviation: 0.44 C) mean: 1.30; standard deviation: 0.44 B) mean: 1.30; standard deviation: 0.32 D) mean: 1.23; standard deviation: 0.66 S A test consists of 90 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers. A) mean: 45; standard deviation: 6.71 C) mean: 18; standard deviation: 3.79 B) mean: 18; standard deviation: 4.24 D) mean: 45; standard deviation: 3.79 b A test consists of 10 multiple choice questions, each with five possible answers, one of which is correct. To pass the test a student must get 60% or better on the test. If a student randomly guesses, what is the probability that the student will pass the test? A) 0.205 B) 0.006 C) 0.377 D) 0.060 Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Find the probability of at most three boys in ten births. A) 0.300 B) 0.172 C) 0.003 D) 0.333
Transcribed Image Text:3 0.03 4 0.01 A) mean: 1.23; standard deviation: 0.44 C) mean: 1.30; standard deviation: 0.44 B) mean: 1.30; standard deviation: 0.32 D) mean: 1.23; standard deviation: 0.66 S A test consists of 90 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean and the standard deviation of the number of correct answers. A) mean: 45; standard deviation: 6.71 C) mean: 18; standard deviation: 3.79 B) mean: 18; standard deviation: 4.24 D) mean: 45; standard deviation: 3.79 b A test consists of 10 multiple choice questions, each with five possible answers, one of which is correct. To pass the test a student must get 60% or better on the test. If a student randomly guesses, what is the probability that the student will pass the test? A) 0.205 B) 0.006 C) 0.377 D) 0.060 Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children. Find the probability of at most three boys in ten births. A) 0.300 B) 0.172 C) 0.003 D) 0.333
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