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Given two independent random samples with the following results: n1=15 x‾1=109 s1=11 n2=10 x‾2=74 s2=30 Use...

Given two independent random samples with the following results:

n1=15

x‾1=109

s1=11

n2=10

x‾2=74

s2=30

Use this data to find the 99%

confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed.

Step 1 of 3 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. If possible, please show work or show inputs in TI 83+.

Math   Statistics-And-Probability   
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