stat test 1 spring 04

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Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Total 11 Pts 15 Pts 16 Pts 20 Pts 17 Pts 13 Pts 8 Pts 100 Pts MATH 147 TEST ONE Spring 2004 February 11, 2004 Name: Section: (1 point) DIRECTIONS: Show all work. Solutions with no work will receive NO credit. Neatness counts. All necessary tables are provided at the end of the test. Carry out all your calculations to at least two digits to the right of the decimal point. Part I True/False For questions 1 - 3 circle T for true and F for false. (2 points each) 1. T F The NFIP experiment on the effectiveness of the Salk polio vaccine is an example of a randomized controlled experiment. 2. T F In a series of measurements, bias varies from observation to observation. 3. T F In the U.S. in 1990, there were 2.1 million deaths from all causes, compared to 1.7 million in 1960 - nearly a 25% increase. The data show that the public’s health got worse over the period 1960-1990. 4. T F For a list of numbers, approximately 50% are above the average. . Part II Fill in the blank For questions 4 - 5 complete the sentence by filling in the blank. (2 points each) 5. The sketches below show the results of two studies on the pill, for women ages 25-29. In one study, the pill adds about 10% to blood pressures. Which of the histograms below (i or ii) is associated with this study? 1
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6. The following list of numbers: 1, 7, 13, 21, 26 is converted to standard units. What is the resulting standard deviation (SD) of the converted list? . 7. In a histogram with a long right tail, the median is
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stat test 1 spring 04 - Page 1 11 Pts Page 2 15 Pts Page 3...

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