Question

There is only one correct answer per question. Put your answers on the blank white sheet of paper provided. 1.) limnNA is implied by, a.) a shrinking variance b.) a sample of 30 or more c.) the Central Limit Theorem d.) the Law of Large Numbers e.) the Lonely Runner Conjecture 2.) Match the following with appropriate descriptors below: Clustered Sampling, Stratified Sampling a.) probabilistie method, non-probabilistie method b.) non-probabilistie method, probabilistie method c.) heterogenous groups, homogenous groups d.) homogenous groups, heterogenous groups e.) more than one of the above 3.) As the number of obeervations in a sample incresses, or the number of samplings incresses, which of the following is not true a.) the sampling bias shrinks e.) the variance of the sampling distribution shrinks d.) the sampling distribution will become taller, with smaller tails e.) all of the above are true 4.) Using a sample to compute a statistic as a proxy for a parameter is generally a.) called point estimation b.) biased so long as the expected value of the statistic is the same as the parameter c.) impossible unless the population is normally distributed d.) proof that mustard is better than ketchup e.) all of the above 5.) In general biased estimates are pretty useless. However, an exception is where we can use the biased estimate as an upper or lower bound for a population parameter. a.) True b.) False sampling is that the probability of 6.) The key requirement of an observation entering the sample must be exactly the ssme for every observation. a.) simple random b.) judgment c.) unbiased d.) stratified e.) none of the above

Answer 1

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