The following results come from two independent random samples taken of two populations. Sample 1 Sample...

The following results come from two independent random samples taken of two populations.

Sample 1	Sample 2
n₁ = 60	n₂ = 35
x₁ = 13.6	x₂ = 11.6
σ₁ = 2.5	σ₂ = 3

(a)

What is the point estimate of the difference between the two population means? (Use

x₁ − x₂.)

(b)

Provide a 90% confidence interval for the difference between the two population means. (Use

x₁ − x₂.

Round your answers to two decimal places.)

(c)

Provide a 95% confidence interval for the difference between the two population means. (Use

x₁ − x₂.

Round your answers to two decimal places.)

Solutions

Expert Solution

a) Point estimate is 2.4

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