Find the value: t_{\frac{a}{2}} n=10 for the 90\% confidence interval for the mean.

UkusakazaL

UkusakazaL

Answered question

2021-08-07

find the value:
ta2
n=10 for the 90% confidence interval for the mean.

Answer & Explanation

Ian Adams

Ian Adams

Skilled2021-08-16Added 163 answers

Step 1
d.
Given:
n=10
α=0.1
The degrees of freedom is obtained as below:
df=n1
=101
=9
Critical value:
The critical value tα2 is obtained from Excel using "=TINV(probability, deg_freedom)".
Output obtained using Excel is given below:
E=1.833113
From the output, the value tα2 is 1.8331
Step 2
Answer: tα2=1.8331.

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