For each of the following situations, draw a normal distribution (a.k.a. “bell-shaped curve”), mark the critical value(s), shade in the region of rejection, compare the stated t-statistic to the critical value(s), and make a decision whether to reject the null hypothesis (H₀).

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a. Critical value = +2.262; t = 1.25 b. Critical value = +2.074; t = -2.50 C. Critical value = 1.734; t = -2.00 d. Critical value = -1.701; t = -1.79