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489 Section 9.2 9.11 Babies Weights (Example 20) Some sources report that the weights of full-term newborn babies have a mean of 7 pounds and a standard deviation of 0.6 pound and are Normally distributed. a. What is the probability that one newborn baby will have a weight within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds, or within one standard deviation of the mean? b. What is the probability the average of four babies' weights will be within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds? c. Explain the difference between a and b.

489 Section 9.2 9.11 Babies Weights (Example 20) Some sources report that the weights of full-term newborn babies have a mean of 7 pounds and a standard deviation of 0.6 pound and are Normally distributed. a. What is the probability that one newborn baby will have a weight within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds, or within one standard deviation of the mean? b. What is the probability the average of four babies' weights will be within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds? c. Explain the difference between a and b.

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
Section10.4: Distributions Of Data
Problem 19PFA
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9.11
n 9.2 489 Section 9.2 9.11 9.12 Chapter 9: Section Exercises Babies Weights (Example 20) Some sources report that the weights of full-term newborn babies have a mean of 7 pounds and a standard deviation of 0.6 pound and are Normally distributed. AP a. What is the probability that one newborn baby will have a weight within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds, or within one standard deviation of the mean? b. What is the probability the average of four babies' weights will be within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds? c. Explain the difference between a and b. Babies' Weights, Again Some sources report that the weights of full-term newborn babies have a mean of 7 pounds and a standard deviation of 0.6 pound and are Normally distributed. In the given outputs, the shaded areas (reported as p =) represent the probability that the mean will be larger than 7.6 or smaller than 6.4. One of the outputs uses a sample size of 4, and one uses a sample size of 9. 489
Transcribed Image Text:n 9.2 489 Section 9.2 9.11 9.12 Chapter 9: Section Exercises Babies Weights (Example 20) Some sources report that the weights of full-term newborn babies have a mean of 7 pounds and a standard deviation of 0.6 pound and are Normally distributed. AP a. What is the probability that one newborn baby will have a weight within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds, or within one standard deviation of the mean? b. What is the probability the average of four babies' weights will be within 0.6 pound of the mean-that is, between 6.4 and 7.6 pounds? c. Explain the difference between a and b. Babies' Weights, Again Some sources report that the weights of full-term newborn babies have a mean of 7 pounds and a standard deviation of 0.6 pound and are Normally distributed. In the given outputs, the shaded areas (reported as p =) represent the probability that the mean will be larger than 7.6 or smaller than 6.4. One of the outputs uses a sample size of 4, and one uses a sample size of 9. 489
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