Unformatted text preview: 7. Choose only one from (a) to (d) (2 point each) (1) Which one is the probability of rejecting the null hypothesis when it is false? (a) Signiﬁcance level (b) P—value (iPower (3)) Type II error \ (2) Which one is continuous? (a) Poisson (b) Chi—square (e) Binomial (d) Hypergeometric (3) Which onefof the following is the sensitivity? , (a) P(Dl+) (l?) 1’(+lDl (C) Pt’lDC) (d) 1’(DCl~) (4) Suppose that there are 100 members in a local biology society. How many sets of three
representatives are possible? (a) 970200 (b) 323400 (3.) 161700 (d) 4950 (5) If X N N(,u7 02), then what distribution does $3,}: follow?
(a) AT(0:1) (B) tn—l (C) X721~1 (d) fn—lm—l (6) Which one of the following measures variability? ( ) range (b) median (c) midrange (d) mode (7) What is a subset of a population called? (a) statistic (b) parameter ((3) individual ((1) sample (8) Suppose that the width of CI for the p with known population variance is 4 with the
sample size 50. What size of a sample do you need if you want the width of CI to be 2‘? p (a) 2.5 (b) 50 (9.200 (d) 400 (9) Which value is P(~£l,0.95 < T) , where T N t1? (a) 0.025 (b) 0.05 (c) 0.975 (d) 0.95 f (10) Suppose that the population mean of a characteristic is 100. 10 units are selected at
random. What is the expectation of the sample mean? (a) 0 (b) 1 (c) 10 (d) 100 ...
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 Spring '08
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