Construct a 90% confidence interval for ₁-2 with the sample statistics for mean cholesterol content of a hamburger from two fast food chains and confidence interval construction formula below. Assume the populations are approximately normal with unequal variances. X₁ = 118 mg, s₁ = 3.72 mg, n₁ = 11 X₂ = 55 mg, S₂ = 2.14 mg, n₂ = 16 Stats Confidence interval when variances are not equal (x₁-x₂)

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3
Construct a 90% confidence interval for ₁-2 with the sample statistics for mean cholesterol content of a hamburger
from two fast food chains and confidence interval construction formula below. Assume the populations are
approximately normal with unequal variances.
x₁ = 118 mg, s₁ = 3.72 mg, n₁ = 11
Stats
Confidence
interval when
variances are not
equal
(x₁-x₂)-tc
2
+
< H₁ ¯¯ H₂ ≤ (X₁ − X₂ ) + tc
<
₁
0₂
d.f. is the smaller of n₁ - 1 or n₂-1
Enter the endpoints of the interval
< µ₁ − µ₂ < (Round to the nearest integer as needed.)
n₁
ان
1₂
30
X₂ = 55 mg, S₂ = 2.14 mg, n₂ = 16
Transcribed Image Text:Construct a 90% confidence interval for ₁-2 with the sample statistics for mean cholesterol content of a hamburger from two fast food chains and confidence interval construction formula below. Assume the populations are approximately normal with unequal variances. x₁ = 118 mg, s₁ = 3.72 mg, n₁ = 11 Stats Confidence interval when variances are not equal (x₁-x₂)-tc 2 + < H₁ ¯¯ H₂ ≤ (X₁ − X₂ ) + tc < ₁ 0₂ d.f. is the smaller of n₁ - 1 or n₂-1 Enter the endpoints of the interval < µ₁ − µ₂ < (Round to the nearest integer as needed.) n₁ ان 1₂ 30 X₂ = 55 mg, S₂ = 2.14 mg, n₂ = 16
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