Given two independent random samples with the following results:

n1=6 n2=11

x1bar=131 x2bar=109

s1= 14 s2=10

Use this data to find the99%

99%confidence interval for the true difference between the population means. Assume that the population variances are equal and that the two populations are normally distributed.

Copy Data

Step 1 of 3:Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.