The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. 1421 1222 988 691 721 830 Assume the population is normally distributed. 724 740 549 627 1447 946 (a) Find the sample mean. x= (Round to one decimal place as needed.) (b) Find the sample standard deviation. s=(Round to one decimal place as needed.) (c) Construct a 95% confidence interval for the population mean u. A 95% confidence interval for the population mean is ( D. (Round to one decimal place as needed.)
The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below. 1421 1222 988 691 721 830 Assume the population is normally distributed. 724 740 549 627 1447 946 (a) Find the sample mean. x= (Round to one decimal place as needed.) (b) Find the sample standard deviation. s=(Round to one decimal place as needed.) (c) Construct a 95% confidence interval for the population mean u. A 95% confidence interval for the population mean is ( D. (Round to one decimal place as needed.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) below.
Assume the population is normally distributed.
1421
1222
988
691
721
830
724
740
549
627
1447
946
(a) Find the sample mean.
x= (Round to one decimal place as needed.)
%3D
(b) Find the sample standard deviation.
s= (Round to one decimal place as needed.)
(c) Construct a 95% confidence interval for the population mean u.
A 95% confidence interval for the population mean is ( ).
(Round to one decimal place as needed.)
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