A simple random sample of body weight expressed as a percentage of ideal in 9 high...
A simple random sample of body weight expressed as a percentage of ideal in 9 high school girls reveals: 114, 100, 104, 94, 114, 105, 103, 105, 96.
(a) Calculate a 95% confidence for population mean μ of this variable in the school.
(b) What is the margin of error of your estimate? (Numerical value.)
(c) How large a sample would be needed to reduce the margin of error of the 95% confidence interval down to 3?
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A simple random sample of body weight expressed as a percentage
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A simple random sample of size n is drawn. The sample mean,x overbarx, is found to...
A simple random sample of size n is drawn. The sample mean,x overbarx, is found to be 17.8 and the sample standard deviation, s, is found to be 4.4 (a) Construct a 95% confidence interval about μ if the sample size, n, is 35 Lower bound: ____ Upper bound: ______ (Use ascending order. Round to two decimal places as needed.) (b) Construct a 95% confidence interval about μ if the sample size, n, is 51 Lower bound: ____ Upper bound:...
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A simple random sample of size n is drawn from a population that is normally distributed....
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A simple random sample of size n is drawn. The sample mean, x, is found to...
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