☑Kizspy.me
(Choose 1 answer)
(See picture)
☐ A
A. (0.128, 0.332)
☐ C
B. (0.144, 0.316)
☐ D
C. (0.125, 0.335)
☐ E
D. None of the other choices is correct
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E. (-0.014, 0.474)
FUQ.sh
sh the exam.
Two machines are used to fill plastic bottles with dishwashing
detergent. The fill volume can be assumed normal, with standard
deviation σ = 0.15 fluid ounces and σ = 0.20 fluid ounces for
machine 1 and machine 2, respectively. Two random samples of
n₁ = 20 bottles from machine 1 and n₂ = 25 bottles from machine 2
are selected, and the sample means are = 30.85 fluid ounces and
x=30.62 fluid ounces. Construct a 95% two-sided confidence
interval for the difference in mean fill volumes of two machines.
Let 0.025 -1.96, 0.05 = 1.645, 0.025,43 = 2.017, 0.05,43 = 1.681
