Question: =+a. Two-tailed test, df 5 9, t 5 0.73 b. Upper-tailed test, df 5 10, t 5 20.5 c. Lower-tailed test, n 5 20, t

=+a. Two-tailed test, df 5 9, t 5 0.73

b. Upper-tailed test, df 5 10, t 5 20.5

c. Lower-tailed test, n 5 20, t 5 22.1

d. Lower-tailed test, n 5 20, t 5 25.1

e. Two-tailed test, n 5 40, t 5 1.7

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