Question

Given two independent random samples with the following results: n1=11 x‾1=133 s1=20     n2=12 x‾2=151 s2=22 Use...

Given two independent random samples with the following results:

n1=11

x‾1=133

s1=20

   

n2=12

x‾2=151

s2=22

Use this data to find the 90% 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. Please show work or show TI 83 inputs.

Math   Statistics-And-Probability   
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