Find the appropriate critical value either 20 ) Confidence level = 99% and =21 012-2901 022=2567...

Question

Question

Answer 1

Answer #1

Here, n = 21

Since sample size is less than 30, we will consider t-test statistics.

alpha = 1 - 0.99 = 0.01

At 1% level of significance and n=21,

tα/2,n-1 = t0.005,20 = 2.8453 (from statistical tables for t distribution)

Answer: Option 3

Answer 2

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