# Question

The following information is obtained from two independent samples selected from two populations.

n1 = 650 1 = 1.05 σ1 = 5.22

n2 = 675 2 = 1.54 σ1 = 6.80

a. What is the point estimate of µ1 – µ2?

b. Construct a 95% confidence interval for µ1 – µ2. Find the margin of error for this estimate.

n1 = 650 1 = 1.05 σ1 = 5.22

n2 = 675 2 = 1.54 σ1 = 6.80

a. What is the point estimate of µ1 – µ2?

b. Construct a 95% confidence interval for µ1 – µ2. Find the margin of error for this estimate.

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