Complete parts ?(a) through ?(c) below. ?(a) Determine the critical? value(s) fo

Question

Complete parts ?(a) through ?(c) below. ?(a) Determine the critical? value(s) for a? right-tailed test of a population mean at the alpha equals0.05 level of significance with 10 degrees of freedom. ?(b) Determine the critical? value(s) for a? left-tailed test of a population mean at the alpha equals0.10 level of significance based on a sample size of nequals 15 . ?(c) Determine the critical? value(s) for a? two-tailed test of a population mean at the alpha equals0.05 level of significance based on a sample size of nequals 19 . LOADING... Click here to view the? t-Distribution Area in Right Tail.

Explanation / Answer

a) Use Excel function

T.INV(1-005,10)

= 1.81

b) Use Excel function

T.INV(010,15-1)

= -1.35

c) Use Excel function

T.INV(0.95+(0.05/2),19-1)

= -2.10, 2.10

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