Question

A. Critical Values for Hypothesis Tests (o known) a) For an upper tailed hypothesis test when a = .0197, then 2 = b) For a two-tailed hypothesis test when a = 0.0104, then 2a/2= c) For a lower-tailed hypothesis test when a = 0.0132, then-Za = B. Critical Values for Hypothesis Tests (o unknown) a) For an upper tailed hypothesis test at 27 d.f. and a = .025, then ta = b) For a two-tailed hypothesis test at 58 d.f. and a = 0.02, then ta/2= c) For a lower-tailed hypothesis test at 43 d.f. and a = 0.01, then-ta =

Answer 1

a) Critical value, z_α = ABS(NORM.S.INV(0.0197) = 2.060

b) Two tailed critical value, z_α/2 = ABS(NORM.S.INV(0.0104/2)) = 2.562

c) Lower tailed critical value, -z_α = NORM.S.INV(0.0132) = -2.220

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a) df =    27

Upper tailed critical value, t_α = ABS(T.INV(0.025, 27)) = 2.052

b) df =    58

Two tailed critical value, t_α/2 = T.INV.2T(0.02, 58) =    2.392

c) df =    43

Left tailed critical value, -t_α = T.INV(0.01, 43) =    -2.416