SOLUTION: random sample of 12 size AA batteries for toys yield a mean of 3.85 hours with standard deviation, 1.15 hours.
(a) Find the critical value, t*, for a 99% CI. t* =
(b) Find th
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Question 1140021: random sample of 12 size AA batteries for toys yield a mean of 3.85 hours with standard deviation, 1.15 hours.
(a) Find the critical value, t*, for a 99% CI. t* =
(b) Find the margin of error for a 99% CI.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
t (df=11,0.995)=3.106
half-interval is margin of error
t*s/sqrt(n)=3.106*1.15/sqrt(12)=1.03
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