Here s = 3.6332 and n = 20
df = 20 - 1 = 19
α = 1 - 0.9 = 0.1
The critical values for α = 0.1 and df = 19 are Χ^2(1-α/2,n-1) =
10.117 and Χ^2(α/2,n-1) = 30.144
CI = (19*3.6332^2/30.144 , 19*3.6332^2/10.117)
CI = (8.32 , 24.79)
LOwer Bound = 8.32
Upper bound = 24.79
A simple random sample of size n is drawn from a population that is known to...
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A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample variance, s?, is determined to be 13.2. Complete parts (a) through (c). (a) Construct a 90% confidence interval for o2 if the sample size, n, is 20. The lower bound is (Round to two decimal places as needed.)
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rses ome 9.3.9 Question Help A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample variance, s?, is determined to be 12.8. Complete parts (a) through (a) Construct a so confidence interval for the sample size, n, is 20. to Statistic The lower bound is (Round to two decimal places as needed.) grated dules ests vo va More 7 Parts Enter your answer in the answer box and then...
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A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x overbar x, is found to be 108, and the sample standard deviation, s, is found to be 10. (a) Construct a 95% confidence interval about mu μ if the sample size, n, is 12. (b) Construct a 95% confidence interval about mu μ if the sample size, n, is 23. (c) Construct a a 96 96% confidence...