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In a test of hypotheses Ho:f = -28 versus H1:+-28 at the 1% level of significance, when the sample size is 40 and o is unknow

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Answer #1

t= 2708.......................by using t table or by using Excel command =TINV(0.01,39)

Sample size = 40

Degree of freedom = n - 1 = 40 -1 = 39

(-00,-2.576] [2.576,00) [2.426,00) (-00 -2.708] U (2.708,00) O (-3, -2.326] U[2.326, x) (-00,-2.426]

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