# Test 9B - Test 9B A P Statistics Name Directions Work on...

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Test 9B A P Statistics Name: Directions: Work on these sheets. Answer completely, but be concise. Part 1: Multiple Choice. Circle the letter corresponding to the best answer. 1. A phone-in poll conducted by a newspaper reported that 73% of those who called in liked business tycoon Donald Trump. The unknown true percentage of American citizens who like Donald Trump is a (a) Statistic (b) Sample (c) Parameter (d) Population (e) None of the above. The answer is . 2. The sampling distribution of a statistic is (a) The probability that we obtain the statistic in repeated random samples (b) The mechanism that determines whether randomization was effective (c) The distribution of values taken by a statistic in all possible samples of the same sample size from the same population (d) The extent to which the sample results differ systematically from the truth (e) None of the above. The answer is . 3. A statistic is said to be unbiased if (a) The survey used to obtain the statistic was designed so as to avoid even the hint of racial or sexual prejudice (b) The mean of its sampling distribution is equal to the true value of the parameter being estimated (c) Both the person who calculated the statistic and the subjects whose responses make up the statistic were truthful (d) It is used for honest purposes only (e) None of the above. The answer is . 4.

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Test 9B - Test 9B A P Statistics Name Directions Work on...

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