What sample size is needed to give a margin of error within +6 in estimating a population mean with 99% confidence, assuming a previous sample had s = 16. Round your answer up to the nearest integer.
What sample size is needed to give a margin of error within +6 in estimating a population mean with 99% confidence, assuming a previous sample had s = 16. Round your answer up to the nearest integer.
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Chapter 6, Section 2-CI, Exercise 087
What sample size is needed to give a margin of error within +6 in estimating a population mean with 99% confidence, assuming a previous sample hads = 16.
Round your answer up to the nearest integer.
sample size =
the absolute tolerance is +/-2
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Chapter 6, Section 4-CI, Exercise 188
Use the t-distribution to find a confidence interval for a difference in means H1 - H2 given the relevant sample results. Give the best estimate for 41 -H2, the margin of error, and the confidence
Interval. Assume the results come from random samples from populations that are approximately normally distributed.
A 99% confidence interval for u - H2 using the sample results X, = 79.1, s = 9.7, n = 25 and X2 = 61.6, s2 = 8.0, n2 = 20
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Enter the exact answer for the best estimate and round your answers for the margin of error and the confidence interval to two decimal places.
Best estimate=
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Margin of error =
Confidence interval :
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