Question

Find t_{\frac{\alpha}{2}},\ n=15 for the 98\% confidence interval for the mean.

Confidence intervals
ANSWERED
asked 2021-08-07
Find \(\displaystyle{t}_{{{\frac{{\alpha}}{{{2}}}}}},\ {n}={15}\) for the \(\displaystyle{98}\%\) confidence interval for the mean.

Expert Answers (1)

2021-08-06
Step 1
Provided information that,
\(\displaystyle{n}={15}\)
Alpha \(\displaystyle{\left(\alpha\right)}={1}-{0.98}={0.02}\)
\(\displaystyle{\frac{{\alpha}}{{{2}}}}={0.01}\)
Step 2
t Critical value:
\(\displaystyle{t}_{{{0.01},\ {n}-{1}}}={2.1447}\)
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