Question

Calculate the single-sided upper bounded 90% confidence interval for the population mean (mu) given that a sample of size n=9 yields a sample mean of 3.86 and a sample standard deviation of 0.73. Your answer: mu < 4.11 mu < 4.20 mu < 4.09 mu < 3.95 mu < 4.07 mu < 4.50 mu < 4.09 mu < 4.44 mu < 3.96 mu < 4.04 Calculate the two-sided 99% confidence interval for the population mean (mu) given that a sample of size n=8 yields a sample mean of 14.95 and a sample standard deviation of 4.08. Your answer: 9.05 < mu < 20.85 4.99 < mu < 24.91 12.06 < mu < 17.84 7.40 < mu < 22.50 8.91 < mu < 20.99 9.90 < mu < 20.00 10.17 < mu < 19.73 10.82 < mu < 19.08 13.81 < mu < 16.09 12.59 < mu < 17.31 Calculate the 90% confidence interval for the difference (mu1-mu2) of two population means given the following sampling results. Population 1: sample size = 19, sample mean = 19.28, sample standard deviation = 1.77. Population 2: sample size = 12, sample mean = 12.95, sample standard deviation = 2.50. Your answer: 3.50 < mu1-mu2 < 9.16 4.72 < mu1-mu2 < 7.94 5.78 < mu1-mu2 < 6.89 5.38 < mu1-mu2 < 7.28 3.93 < mu1-mu2 < 8.73 4.89 < mu1-mu2 < 7.77

          Calculate the single-sided upper bounded 90% confidence interval for the population mean (mu) given that a sample of size n=9 yields a sample mean of 3.86 and a sample standard deviation of 0.73.

Your answer:
mu < 4.11
mu < 4.20
mu < 4.09
mu < 3.95
mu < 4.07
mu < 4.50
mu < 4.09
mu < 4.44
mu < 3.96
mu < 4.04

Calculate the two-sided 99% confidence interval for the population mean (mu) given that a sample of size n=8 yields a sample mean of 14.95 and a sample standard deviation of 4.08.

Your answer:
9.05 < mu < 20.85
4.99 < mu < 24.91
12.06 < mu < 17.84
7.40 < mu < 22.50
8.91 < mu < 20.99
9.90 < mu < 20.00
10.17 < mu < 19.73
10.82 < mu < 19.08
13.81 < mu < 16.09
12.59 < mu < 17.31

Calculate the 90% confidence interval for the difference (mu1-mu2) of two population means given the following sampling results. Population 1: sample size = 19, sample mean = 19.28, sample standard deviation = 1.77. Population 2: sample size = 12, sample mean = 12.95, sample standard deviation = 2.50.

Your answer:
3.50 < mu1-mu2 < 9.16
4.72 < mu1-mu2 < 7.94
5.78 < mu1-mu2 < 6.89
5.38 < mu1-mu2 < 7.28
3.93 < mu1-mu2 < 8.73
4.89 < mu1-mu2 < 7.77

Calculate the single-sided upper bounded 90% confidence interval for the population mean (mu) given that a sample of size n=9 yields a sample mean of 3.86 and a sample standard deviation of 0.73.

Your answer:
mu < 4.11
mu < 4.20
mu < 4.09
mu < 3.95
mu < 4.07
mu < 4.50
mu < 4.09
mu < 4.44
mu < 3.96
mu < 4.04

Calculate the two-sided 99% confidence interval for the population mean (mu) given that a sample of size n=8 yields a sample mean of 14.95 and a sample standard deviation of 4.08.

Your answer:
9.05 < mu < 20.85
4.99 < mu < 24.91
12.06 < mu < 17.84
7.40 < mu < 22.50
8.91 < mu < 20.99
9.90 < mu < 20.00
10.17 < mu < 19.73
10.82 < mu < 19.08
13.81 < mu < 16.09
12.59 < mu < 17.31

Calculate the 90% confidence interval for the difference (mu1-mu2) of two population means given the following sampling results. Population 1: sample size = 19, sample mean = 19.28, sample standard deviation = 1.77. Population 2: sample size = 12, sample mean = 12.95, sample standard deviation = 2.50.

Your answer:
3.50 < mu1-mu2 < 9.16
4.72 < mu1-mu2 < 7.94
5.78 < mu1-mu2 < 6.89
5.38 < mu1-mu2 < 7.28
3.93 < mu1-mu2 < 8.73
4.89 < mu1-mu2 < 7.77

Added by Cynthia H.

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