6. Suppose scores on exams in statistics are normally distributed with an unknown population mean and a population standard deviation of three points. A random sample of 36 scores is taken and gives a sample mean (sample mean score) of 68. Find a confidence interval estimate for the population mean exam score (the mean score on all exams). Find a 90% confidence interval for the true (population) mean of statistics exam scores. (Round final answer to 4 decimal places) 7. Suppose you do a study of acupuncture to determine how effective it is in relieving pain. You measure sensory rates for 15 subjects with the results given. Use the sample data to construct a 95% confidence interval for the mean sensory rate for the population (assumed normal) from which you took the data. 8.6; 9.4; 7.9; 6.8; 8.3; 7.3; 9.2; 9.6; 8.7; 11.4; 10.3; 5.4; 8.1; 5.5; 6.9 with sample mean 8.2267 and standard deviation 1.6722. (Round final answer to 4 decimal places)
6. Suppose scores on exams in statistics are normally distributed with an unknown population mean and a population standard deviation of three points. A random sample of 36 scores is taken and gives a sample mean (sample mean score) of 68. Find a confidence interval estimate for the population mean exam score (the mean score on all exams). Find a 90% confidence interval for the true (population) mean of statistics exam scores. (Round final answer to 4 decimal places) 7. Suppose you do a study of acupuncture to determine how effective it is in relieving pain. You measure sensory rates for 15 subjects with the results given. Use the sample data to construct a 95% confidence interval for the mean sensory rate for the population (assumed normal) from which you took the data. 8.6; 9.4; 7.9; 6.8; 8.3; 7.3; 9.2; 9.6; 8.7; 11.4; 10.3; 5.4; 8.1; 5.5; 6.9 with sample mean 8.2267 and standard deviation 1.6722. (Round final answer to 4 decimal places)
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:- 6. Suppose scores on exams in statistics are normally distributed with an unknown
population mean and a population standard deviation of three points. A random
sample of 36 scores is taken and gives a sample mean (sample mean score) of 68.
Find a confidence interval estimate for the population mean exam score (the mean
score on all exams). Find a 90% confidence interval for the true (population) mean of
statistics exam scores. (Round final answer to 4 decimal places)
7. Suppose you do a study of acupuncture to determine how effective it is in relieving
pain. You measure sensory rates for 15 subjects with the results given. Use the
sample data to construct a 95% confidence interval for the mean sensory rate for the
population (assumed normal) from which you took the data. 8.6; 9.4; 7.9; 6.8; 8.3;
7.3; 9.2; 9.6; 8.7; 11.4; 10.3; 5.4; 8.1; 5.5; 6.9 with sample mean 8.2267 and
standard deviation 1.6722. (Round final answer to 4 decimal places)
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