Conduct the following tests of hypotheses, assuming that the populations of paired differences are normally distributed. a.

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Conduct the following tests of hypotheses, assuming that the populations of paired differences are normally distributed.
a. H0: µd = 0, H1: µd ≠ 0, n = 26,  = 9.6, sd = 3.9, α = .05
b. H0: µd = 0, H1: µd > 0, n = 15, = 8.8, sd = 4.7, α = .01
c. H0: µd = 0, H1: µd < 0, n = 20,  = –7.4, sd = 2.3, α = .10
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