Use the sample information x⎯⎯x¯ = 43, σ = 3, n = 11 to calculate the following confidence intervals for μ assuming the sample is from a normal population.
(a) 90 percent confidence. (Round your answers to 4 decimal places.)
The 90% confidence interval is from _______ to ________
(b) 95 percent confidence. (Round your answers to 4 decimal places.)
The 95% confidence interval is from ______ to _______
(c) 99 percent confidence. (Round your answers to 4 decimal places.)
The 99% confidence interval is from _______ to _______
(d) Describe how the intervals change as you increase the confidence level.
Given Data
a) 90 percent confidence interval.
b) 95 percent confide...
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