42, and suppose we obtain = 240, 210, $₁ = 5, $2 = 6. al variances calculate a 95 percent confidence interval for H₁ - H₂. Can we be 95 pea D? (Round your answers to 3 decimal places.) interval [ the entire interval is above 11 20.

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Suppose we have taken independent, random samples of sizes n₁ =7 and n₂ = 7 from two normally distributed populations having
means ₁ and ₂, and suppose we obtain #₁ = 240, = 210, $₁ = 5, s2 = 6.
Assuming equal variances calculate a 95 percent confidence interval for H₁ - H₂. Can we be 95 percent confident that μ₂-₂ is
greater than 20? (Round your answers to 3 decimal places.)
The confidence interval=[
Yes
the entire interval is
above
Why we can use the equal variances procedure here?
s1 and s2 very close and n1 = n2
O s1 and s2 very close and n1 # n2
20
Transcribed Image Text:Suppose we have taken independent, random samples of sizes n₁ =7 and n₂ = 7 from two normally distributed populations having means ₁ and ₂, and suppose we obtain #₁ = 240, = 210, $₁ = 5, s2 = 6. Assuming equal variances calculate a 95 percent confidence interval for H₁ - H₂. Can we be 95 percent confident that μ₂-₂ is greater than 20? (Round your answers to 3 decimal places.) The confidence interval=[ Yes the entire interval is above Why we can use the equal variances procedure here? s1 and s2 very close and n1 = n2 O s1 and s2 very close and n1 # n2 20
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