1) What do we call the subgroups of populations? a) Average b) Estimate c) Sample d) Terms 2) Which of the following is a range of values that contains the parameter value? a) Confidence coefficient b) Confidence interval c) Confidence level d) Confidence limit 3) Given n ≥ 30 and ơ is unknown, what is the appropriate distribution? a) p b) r c) t d) z 4) In a t distribution, the critical values are based on_____. a) df b) n c) t d) z 5) Which of the following illustrates the confidence level? a) 30-39 b) 90% - 94% c) 90% d) 32.8 6) What statement pertains to the numerical value of a population parameter? a) critical values b) hypothesis-testing c) level of significance d) statistical hypothesis 7) Which of the following statements present Type II error? a) A true null hypothesis is accepted. b) A false null hypothesis is accepted. c) A true null hypothesis is rejected. d) A false null hypothesis is rejected. 8) Which symbol denotes parameter value? a) s b) x c) t d) µ 9) What test of statistical hypothesis is expressed using less than ( < ) or greater than ( > )? a) alternative hypothesis b) directional test c) nondirectional test d) null hypothesis 10) It pertains to the region that corresponds to the rejection of the null hypothesis at some chosen probability level. a) critical region b) level of significance c) one-tailed test d) two-tailed test

HYPOTHESIS TESTING

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