Two samples are taken with the following sample means, sizes, and standard deviations x¯1 = 20...
Two samples are taken with the following sample means, sizes,
and standard deviations
x¯1 = 20 x¯2 = 26
n1 = 60 n2 = 72
s1 = 4 s2 = 2
Find a 92% confidence interval, round answers to the nearest
hundredth.
Homework Answers
The statistical software output for this problem is :
A 92% confidence interval is :
(-6.948 , -5.052)
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Two samples are taken with the following sample means, sizes,
and standard deviations
x¯1 = 20...
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Two samples are taken with the following sample means, sizes, and standard deviations ¯ x1 x¯1 = 31 ¯ x2 x¯2 = 28 n1 n1 = 70 n2 n2 = 46 s1 s1 = 4 s2 s2 = 2 We want to estimate the difference in population means using a 89% confidence level. What distribution does this require? t, df = 108 z NOTE: The more accurate df formula, used above, is: df= ( s 2 1 n1 + s...
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Two samples are taken with the following sample means, sizes, and standard deviations 21 = 24 m2 = 31 ni = 60 n2 = 65 $1 = 5 82 = 3 Estimate the difference in population means using a 89% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth. <Hi - 42
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Two samples are taken with the following sample means, sizes, and standard deviations 21 = 24 m2 = 31 ni = 60 n2 = 65 $1 = 5 82 = 3 Estimate the difference in population means using a 89% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth. <Hi - 42
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