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26) Gina and Stewart are surf-fishing on the Atlantic coast, where both bluefish and pompano are common catches. The mean length of a bluefish is
26) Gina and Stewart are surf-fishing on the Atlantic coast, where both bluefish and pompano are common catches. The mean length of a bluefish is 265 millimeters with a standard deviation of 41 mm. For pompano, the mean is 157 mm with a standard deviation of 38 mm. Stewart caught a bluefish that was 281 mm long, and Gina caught a pompano that was 164 mm long. Who caught the longer fish, relative to fish of the same species? A) Neither. Relative to its respective species, the fish are the same length. B) Gina C) Stewart 27) Compute the correlation coefficient. 3 4 5 6 7 8 y 77 80 103 111 117 128 A) 0.022 B) 43.895 C) 0.956 D) 0.978 28) The following table presents the number of police officers (per 100,000 citizens) and the annual murder rate (per 100,000 citizens) for a sample of cities. lice Officers (per 100,000) Murders (per 100,000 per yr) 1109 16 1238 14 1235 38 1298 40 1077 49 1076 12 The correlation coefficient between the per capita number of police officers and the per capita murde -0.666. Which of the following is the best interpretation of the correlation coefficient? A) The per capita murder rate tends to go down as the per capita number of police officers goes up. B) More per capita police officers results in fewer per capita murders. C) Higher murder rates make it more difficult for cities to hire police officers. D) The per capita number of police officers and the per capita murder rates are positively associated. 829) The common cricket can be used as a crude thermometer. The colder the temperature, the slower the chirping. The table below shows the average chirp rate of a cricket at various temperatures. Chirp Rate Temperature (chirps/second) (OF) 2.9 64.5 2.6 57.1 3.0 68.7 2.3 55.4 2.1 54.4 3.6 75.8 The leastsquares regression line for predicting the temperature from the chirp rate is y = 20.266 + 15.4124x. If two chirp rates differ by 1.5 chirps per second, by how much would the temperature differ? A) 30 F B) 23 F 0) 28 \"F D) 21 \"F 30) So far this season, the university's football team has executed 170 running plays, 142 passing plays, and 16 "trick" plays. What is the probability that the team will execute a passing play? A) 0.455 B) 0.567 C) 0.433 D) 0.518 31) A poll was taken of 14,514 working adults aged 40-70 to determine their level of education. The participants were classified by sex and by level of education. The results were as follows. Education Level Male Female Total High School or Less 3407 2099 5506 Bachelor's Degree 3831 3987 7818 Master's Degree 585 493 1078 Ph.D. 66 46 112 Total 7889 6625 14,514 A person is selected at random. Compute the probability that the person is male or has a Ph.D. A) 0.547 B) 0.551 C) 0.008 D) 0.544 32) The letters "A\
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