Suppose a 95% confidence interval for μ runs from 38 to 46. If we had
tested H0: μ = 42 against H1:μ ≠ 42 using α = 0.05, we would
a) have retained H0
b) not be able to decide about H0unless n were given
c) not be able to decide about H0unless n and σ were given
d) have rejected H0
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