Find the value: t_{\frac{a}{2}} if n=18 for the 99\% confidence interval for the mean.

UkusakazaL

UkusakazaL

Answered question

2021-08-05

Find the value: ta2 if n=18 for the 99% confidence interval for the mean.

Answer & Explanation

Ian Adams

Ian Adams

Skilled2021-08-17Added 163 answers

Step 1
Given: n=18 and 1α=99%
Then, 1α=0.99
α=10.99
α=0.01
Step 2
Now,
The degree of freedom =n1
=181
=17
Then, at α=0.01, from the one tailed t-table-
ta2=t0.012
=t0.005
=2.898

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