onstruct a 95 % Confidence interval estimate for the population mean given the following values: x = 300 σ = 55 = 250
Question No. 8-3:
Construct a 95 % Confidence
x = 300 σ = 55 = 250
Question No. 8-6:
Determine the margin of error for a confidence interval estimate for the population mean of a normal distribution given the following information:
- Confidence level = 0.98, ,
- Confidence level = 0.99, ,
- Confidence level = 0.98, Standard error = 2.356
Question No. 8-9:
A random sample of = 12 values taken from a
107 109 99 91 103 105
105 94 107 94 97 113
Use the sample information to construct a 95% confidence interval estimate for the population mean.
Question No. 8-11:
A random sample was selected from a population having a normal distribution. Calculate a 90% confidence interval estimate for μ for each of the following situations:
a. ∑x = 134, n = 10, s = 3.1
b. ∑x = 3,744, n = 120, s = 8.2
c. ∑x = 40.5, n = 9, σ = 2.9
d. ∑x = 585.9, ∑x2 = 15,472.37, n = 27
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