3. The following results come from two independent random samples taken from two populations. Sample Size...

3.
The following results come from two independent random samples taken from two populations.

	Sample Size	Sample Mean	Population Standard Deviation
Sample 1	n1=52	x1=15.4	σ1=3.1
Sample 2	n2=64	x2=17.3	σ2=4.2

Provide a 95% confidence interval for the difference between two population means.
Using the critical value approach, test whether the population means differ at the 5% significance level.
Using the p-value approach, test whether the population means differ at the 5% significance level.

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orchestra answered 1 year ago

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