A researcher is using a two-tailed hypothesis test with α = 0.01 to evaluate the effect of a treatment. If the boundaries for the critical region are t = ± 2.845, then how many individuals are in the sample? A. n = 23 B. n = 22 C. n = 21 D. n = 20 E. cannot be determined from the information given

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A: The critical region also known as level of significance. It is denoted by the symbol α.

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A: Note: Hi there! Thank you for posting the question. As your question has multiple questions, as per…

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Q: Match the hypothesis, sample sizes and alpha to the critical value(s) 12; N1= 23; N2 = 31; a =0.05…

A: Match the hypothesis sample sizes and alpha to the critical value(s)