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In a random sample of five (5) children, the age at which they first began to combine words in speaking had a mean of 16.5 months and a standard deviation 9.6 months. Assuming normality of the population, a 90% confidence interval for the age in months at which all children begin to combine words is approximately best described as Note: Due to rounding, your answer may be slightly different than the correct choice listed here so choose the best or most approximate answer. O (7.8, 25.2) O (10.2 , 22.8) O (12.4 , 20.6) O (7.3, 25.7) (9.9,23.1)

In a random sample of five (5) children, the age at which they first began to combine words in speaking had a mean of 16.5 months and a standard deviation 9.6 months. Assuming normality of the population, a 90% confidence interval for the age in months at which all children begin to combine words is approximately best described as Note: Due to rounding, your answer may be slightly different than the correct choice listed here so choose the best or most approximate answer. O (7.8, 25.2) O (10.2 , 22.8) O (12.4 , 20.6) O (7.3, 25.7) (9.9,23.1)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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In a random sample of five (5) children, the age at which they first began to combine words in speaking had a mean of 16.5 months and a standard deviation 9.6 months. Assuming normality of the population, a 90% confidence interval for the age in months at which all children begin to combine words is approximately best described as Note: Due to rounding, your answer may be slightly different than the correct choice listed here so choose the best or most approximate answer. O (7.8 , 25.2) O (10.2 , 22.8) O (12.4 , 20.6) O (7.3, 25.7) O (9.9, 23.1)
Transcribed Image Text:In a random sample of five (5) children, the age at which they first began to combine words in speaking had a mean of 16.5 months and a standard deviation 9.6 months. Assuming normality of the population, a 90% confidence interval for the age in months at which all children begin to combine words is approximately best described as Note: Due to rounding, your answer may be slightly different than the correct choice listed here so choose the best or most approximate answer. O (7.8 , 25.2) O (10.2 , 22.8) O (12.4 , 20.6) O (7.3, 25.7) O (9.9, 23.1)
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