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Test_1_Review - AT151 M &2 1 a Astudyof33, b...

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MAT 151              Review Problems for Chapters 1&2     1. Identify the population and the sample. a) A study of 33,043 infants in Italy was conducted to find a link between a heart rhythm  abnormality and sudden infant death syndrome.  b) A survey of 1906 households in the US found that 13% have high definition television.   2. Distinguishing whether the following is a Parameter or a Statistic. a) The average annual salary for 35 of a company’s accountants is $68,000.  b) As of January 2007, 44% of the governors of the 50 states in the United States are  Republicans 3. Identify type of data (qualitative or quantitative). a.  Names of Television shows  b. Your height in inches  c. The answer to the question, “Do you exercise vigorously for at least 20 minutes at  least twice per week?” d. Daily temperatures for the month of July.  4. What problems might there be with the following examples: a. A company wants to test the effectiveness of a new gum developed to help people  quit smoking.  They identify 10 heavy smokers. Five are given the gum and five  are given a placebo. After two months, the subjects are evaluated and it is found  that the five subjects using the new gum have quit smoking.  b. In the same study, the company identifies 1000 adults who are heavy smokers.  The subjects are divided into blocks according to gender.  Females are given the  gum and males are given the placebo. After two months, the female group has a  significant number of subjects who have quit smoking.  c. Suppose the company identifies 240 heavy adult smokers.  The subjects are  randomly assigned to be in a treatment group or control group. Each subject is 
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