Below are a series of observed values for a single-sample z test. For each, decide whether one can reject or fail to reject the null hypothesis. (Hint: Find critical value of z and plot both z and the critical value on a normal distribution to determine whether z falls in the critical zone) a)z = 1.89, α = .05, two-tailed,b)z = 1.90, α = .05, one-tailed (assume rare zone is on the right side of the distribution,c)z = -2.56, α = .01, two-tailed ,

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Below are a series of observed values for a single-sample z test. For each, decide whether one can reject or fail to reject the null hypothesis. (Hint: Find critical value of z and plot both z and the critical value on a normal distribution to determine whether z falls in the critical zone)

a)z = 1.89, α = .05, two-tailed,b)z = 1.90, α = .05, one-tailed (assume rare zone is on the right side of the distribution,c)z = -2.56, α = .01, two-tailed ,

d)z = -2.01, α = .01, one-tailed (assume rare zone is on the left side of the distribution)

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