With the sample mean in Problem 6, find (a) the 95% confidence interval and (b) the 99% confidence interval
What would be an ideal response?
a.
df 1 30 1 29
.05
2.045
95% confidence interval
2.93 2.045(.27)
2.38 3.49
X
N
t
X ts
= ?
? = ? =
= =
= ±
= ±
= ?
b.
.01
2.756
95% confidence interval
2.93 2.756(.27)
2.19 3.68
X
t
X ts
? =
=
= ±
= ±
= ?
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