that are normally distributed with a mean of μ=75.0 beats per minute and a standard deviation of σ=12.5 beats per minute. Complete parts (a) through (c) below. a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 79 beats per minute. The probability is enter your response here. (Round to four decimal places as needed.) Part 2 b. If 25 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 79 beats per minute. The probability is enter your response here. (Round to four decimal places as needed.) Part 3 c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30

that are normally distributed with a mean of μ=75.0 beats per minute and a standard deviation of σ=12.5 beats per minute. Complete parts (a) through (c) below. a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 79 beats per minute. The probability is enter your response here. (Round to four decimal places as needed.) Part 2 b. If 25 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 79 beats per minute. The probability is enter your response here. (Round to four decimal places as needed.) Part 3 c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 22PFA

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Part 2

b. If 25 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 79 beats per minute.

The probability is

enter your response here.

(Round to four decimal places as needed.)

Part 3

c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30?

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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