statistics

10. In a brand recognition study, 871 consumers knew of Google, and 14 did not. Use these results to estimate the probability that a randomly selected consumer will recognize Google. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. prob = 11. A test was given to a group of students. The grades and shirt colors are summarized belo Table: Frequencies by grades and shirt color Shirt Color A B C Total Blue Shirt 3 14 15 32 Red Shirt 12 11 6 29 Total 15 25 21 61 If one student is chosen at random from those who took the test, Find the probability that the student was Red Shirt GIVEN they got a 'B'. 12. A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," "getting worse" or "about the same"). The results are shown in the table below. better same worse Republican 38 104 44 Democrat 12 87 137 none 21 90 118 Express your answers as a decimal and round to the nearest 0.001 (in other words, type 0.123, not 12.3% or 0.123456). If we randomly select one of the adults who participated in this study, compute: P(affiliated with neither party) = P(same) = P(same | affiliated with neither party) = P(affiliated with neither party | same) = P(affiliated with neither party and same) =