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Statistical inference — Question 95

Original QCE Vault practice · 1 mark

Q95 · Practice questionSimple familiar1 mark

QUESTION 95

For n=100n=100, xˉ=20.4\bar x=20.4, s=5s=5, and z=1.96z=1.96, the approximate 95% confidence interval for μ\mu is
(A)
(19.42,21.38)(19.42,21.38)
(B)
(15.40,25.40)(15.40,25.40)
(C)
(20.30,20.50)(20.30,20.50)
(D)
(18.44,22.36)(18.44,22.36)
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