2. The SAT scores of 12 randomly selected high school seniors are given as: 1700 1940 1510 2000 1430 1870 1990 1650 1820 1670 2210 1380 Assume the population distribution is normal. c. Construct a 99 % confidence interval for the population mean μ. d. Construct a 95% confidence interval for the population mean μ. Interpret the results. e. How does decreasing the level of confidence in part (d) change the width of the confidence interval? Explain?
2. The SAT scores of 12 randomly selected high school seniors are given as: 1700 1940 1510 2000 1430 1870 1990 1650 1820 1670 2210 1380 Assume the population distribution is normal. c. Construct a 99 % confidence interval for the population mean μ. d. Construct a 95% confidence interval for the population mean μ. Interpret the results. e. How does decreasing the level of confidence in part (d) change the width of the confidence interval? Explain?
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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2. The SAT scores of 12 randomly selected high school seniors are given as:
1700 1940 1510 2000
1430 1870 1990 1650
1820 1670 2210 1380
Assume the population distribution is normal.
c. Construct a 99 % confidence interval for the population
d. Construct a 95% confidence interval for the population mean μ. Interpret the results.
e. How does decreasing the level of confidence in part (d) change the width of the confidence interval? Explain?
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