Use the confidence level and sample data to find a confidence interval for estimating the population u. Round your answer to the same number of decimal places as the sample mean. A group of 53 randomly selected students have a mean score of 33.3 with a standard deviation of 4.4 on a placement test. What is the 90% confidence interval for the mean score, u, of all students taking the test? Seleccione una: O A. 32.1< < 34.5 O B. 31.7 < u < 34.9 O C. 31.9
Use the confidence level and sample data to find a confidence interval for estimating the population u. Round your answer to the same number of decimal places as the sample mean. A group of 53 randomly selected students have a mean score of 33.3 with a standard deviation of 4.4 on a placement test. What is the 90% confidence interval for the mean score, u, of all students taking the test? Seleccione una: O A. 32.1< < 34.5 O B. 31.7 < u < 34.9 O C. 31.9
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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Transcribed Image Text:Use the confidence level and sample data to find a confidence interval for estimating the population u. Round your
answer to the same number of decimal places as the sample mean.
A group of 53 randomly selected students have a mean score of 33.3 with a standard deviation of 4.4 on a placement test.
What is the 90% confidence interval for the mean score, u, of all students taking the test?
Seleccione una:
A. 32.1 < µ < 34.5
B. 31.7 < µ < 34.9
C. 31.9 < µ < 34.7
O D. 32.3 <u<34.3
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