Author Question: Exhibit 10-4The following information was obtained from independent random samples.Assume normally ... (Read 39 times)

warrenjean01 · **on:** Mar 25, 2023

Question 1

Exhibit 10-4
The following information was obtained from independent random samples.
Assume normally distributed populations with equal variances.

	Sample 1	Sample 2
Sample Mean	45	42
Sample Variance	85	90
Sample Size	10	12

Refer to Exhibit 10-4. The degrees of freedom for the t-distribution are

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22

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23

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24

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19

Question 2

Exhibit 10-4
The following information was obtained from independent random samples.
Assume normally distributed populations with equal variances.

	Sample 1	Sample 2
Sample Mean	45	42
Sample Variance	85	90
Sample Size	10	12

Refer to Exhibit 10-4. The 95% confidence interval for the difference between the two population means is

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-5.372 to 11.372

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-5 to 3

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-4.86 to 10.86

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-2.65 to 8.65

annaelena92 · **Reply #1 on:** Mar 25, 2023

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