The state test scores for 12 randomly selected high school seniors are shown on the right. Complete parts (a) through (c) 1430 1225 below. 700 721 Assume the population is normally distributed. 727 742 630 1445 (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 99% confidence interval for the population mean μ. A 99% confidence interval for the population mean is (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) 1430 1225 below. 700 721 Assume the population is normally distributed. 727 742 630 1445 (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 99% confidence interval for the population mean μ. A 99% confidence interval for the population mean is (Round to one decimal place as needed.)

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 3CYU

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