(A) Suppose we roll a die until we get a "1". This data fails the "Is it binomial"? conditions because: (a) There are not only 2 possible outcomes (b) The number of trials is not constant (c) Probability of success is not the same on each roll (d) All of the above (B) The symbol p (p-hat) represents a (a) variable (b) statisitic (c) parameter (d) none of the above (C) If our critical region for a one-sided, left-tailed t-test is t<-1.782, the critical region for a two-sided t-test with the same Ho (null hypothesis) and Ha (Alternative hypothesis) is: (a) t > 1.782 (b) t + -1.782 (c) t<-1.782 or t > 1.782 (d) None of the above are the correct

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(A) Suppose we roll a die until we get a "1". This data fails the "Is it binomial"? conditions because:
(a) There are not only 2 possible outcomes
(c) Probability of success is not the same on each roll
(b) The number of trials is not constant
(d) All of the above
(B) The symbol ê (p-hat) represents a
(a) variable
(b) statisitic
(c) parameter
(d) none
the above
(C) If our critical region for a one-sided, left-tailed t-test is t < -1.782, the critical region for a two-sided
t-test with the same Ho (null hypothesis) and Ha (Alternative hypothesis) is:
(a) t > 1.782
(b) t + -1.782 (c) t < -1.782 or t > 1.782 (d) None of the above are the correct
(D) We compute two separate confidence intervals for a population mean, one based on a sample of size
n = 20 and one based on a different sample of size n = 40. Which of the following will most likely
be different between the two confidence intervals?
(a) Point estimate
(b) Critical value
(c) Standard Error
(d) All of the above would likely be different
For questions (E), (F), (G) suppose we perform a hypothesis test with
Но : р —
2/3, а %3D 0.05, В — 0.7
(E) What is the power of this test?
(a) 0.05
(b) 0.30
(с) 0.70
(d) 0.95
(F) Which of the following is an acceptable alternative hypothesis for our test?
(а) На :р— 0.5
(b) На :р<0.5
(с) На :р<2/3
(d) None of the above
4
(G) If œ increase to 0.10, which of the following would also increase?
(a) the p-value
(Ъ) В
(c) power
(d) All of the above would increase
Transcribed Image Text:(A) Suppose we roll a die until we get a "1". This data fails the "Is it binomial"? conditions because: (a) There are not only 2 possible outcomes (c) Probability of success is not the same on each roll (b) The number of trials is not constant (d) All of the above (B) The symbol ê (p-hat) represents a (a) variable (b) statisitic (c) parameter (d) none the above (C) If our critical region for a one-sided, left-tailed t-test is t < -1.782, the critical region for a two-sided t-test with the same Ho (null hypothesis) and Ha (Alternative hypothesis) is: (a) t > 1.782 (b) t + -1.782 (c) t < -1.782 or t > 1.782 (d) None of the above are the correct (D) We compute two separate confidence intervals for a population mean, one based on a sample of size n = 20 and one based on a different sample of size n = 40. Which of the following will most likely be different between the two confidence intervals? (a) Point estimate (b) Critical value (c) Standard Error (d) All of the above would likely be different For questions (E), (F), (G) suppose we perform a hypothesis test with Но : р — 2/3, а %3D 0.05, В — 0.7 (E) What is the power of this test? (a) 0.05 (b) 0.30 (с) 0.70 (d) 0.95 (F) Which of the following is an acceptable alternative hypothesis for our test? (а) На :р— 0.5 (b) На :р<0.5 (с) На :р<2/3 (d) None of the above 4 (G) If œ increase to 0.10, which of the following would also increase? (a) the p-value (Ъ) В (c) power (d) All of the above would increase
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