In: Statistics and Probability
Given two independent random samples with the following results:
n1=9 n2=14x
x‾1=180 x2=159
s1=18 s2=34
Use this data to find the 95% 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.
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Step 1 of 3:
Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Step 2 of 3:
Find the standard error of the sampling distribution to be used in constructing the confidence interval. Round your answer to the nearest whole number.
Step 3 of 3:
Construct the 95%95% confidence interval. Round your answers to the nearest whole number.