12. Adults and high school students were asked four trivia questions. The number of correct answers given by each participant was recorded. To the right is a table showing the results. Complete parts a) through e).
0 1 2
3 4 Total
Adults 10 27 48
45 38 168
Students 40 12 11
55 47 165
Total 50 39 59
100 85 333
A) |
If we select a participant at random, what's the probability we choose an adult who had one correct answer? |
B) |
Among the participants who had one correct answer, what is the probability the person is an adult? |
C) |
What is the probability that an adult participant had one correct answer? |
D) |
What is the probability that a student participant had no correct answers? |
E) |
What is the probability that a participant with no correct answers is a student? |
12. Adults and high school students were asked four trivia questions. The number of correct answers...
Adults and high school students were asked four trivia questions. The number of correct answers given by each participant was recorded. To the right is a table showing the results. Complete parts a) through e). ,0,1,2,3,4,Total Adults,16,32,36,45,31,160 Students,45,15,7,40,40,147 Total,61,47,43,85,71,307 a. If we select a participant at random, what's the probability we choose an adult who had one correct answer? b) Among the participants who had one correct answer, what is the probability the person is an adult? c) What is...
13.1.25 Adults and high school students were asked four trvia questions. The number of correct answers given by each participant was recorded To the right is a table showing the results Complete parts a) through e) ults otal a) If we select a participant at random, what's the probability we choose an adult who had one correct answer? 0089 (Round to three decimal places as needed) b) Among the participants who had one correct answer, what is the probability the...
17. Eleventh-and twelfth-grade students at Fairlawn High School were asked whether or not they have their own car. The results of the survey are recorded in the following two-way frequency table. Eleventh Grade (E)| -eearte) : NO car Twelfth Grade ( 228 32 Suppose a student is randomly chosen from a list of eleventh-and twelfth-grade students at the high school. What is the probability that the student chosen will be in twelfith grade or have a car? Use probability and...
Question 1 (30 marks) (a) 500 adults were asked whether or not they will get married in the next 3 years. Their responses are recorded in the table. Would marry in the next 3 years Yes(Y) No (N) Male (M) 150 150 Female (F) 100 100 If one adult is selected at random from these 500 persons, find the probability that (i) the response is 'Yes'; [2 marks] (ii) the response is 'Yes' given female; [2 marks] (iii) the response...
marks) Ben runs a sports program for high school students. Each student that ooses one of the following three sports: volleyball, basketball and netball. The heights of the first 15 students, and the sports they chose, were Volleyball 183, 176, 170, 179 Basketball 165, 169, 171, 154, 165, 159 Netball 167, 160, 177, 173, 170 Ben runs an analysis of variance with these data. A partially complete ANOVA table from his analysis is given below. Source df SS MS F...
12. A survey conducted at Chicago Public Schools (CPS) involving high school students on whether they had participated in binged drinking during the past month. Binge drinking was defined as 5 or more drinks in a row on one or more of the past 30 days. Number who identified as having participated in Binge Drinking. 73 Total participants 571 a. From the sample data is there evidence that the proportion of students who participate in binge drinking is greater than...
A nationwide school examination in history included several multiple-choice questions. Each question had 4 possible answers, only one of which was correct. In a sample of 1000 students from more than 100000 students who participated in the test it was found that 38% answered the first multiple- choice question correctly. Assume that if a student knew the answer to this question then with 100 percent chance he chose the right answer. If a student didn't know the answer, he tried...
Students taking a test were asked about their undergraduate major and intent to pursue their MBA as a full-time or part-time student. A summary of their responses follows. Undergraduate Major Totals Business Engineering Other Intended Enrollment Status Full-Time 354 199 253 806 Part-Time 150 160 195 505 Totals 504 359 448 1,311 (a) Develop a joint probability table for these data. (Round your...
Suppose that 20, 000 married adults in the United States were surveyed as to the number of children they have. The results are compiled and used as theoretical probabilities. Let X equal the number of children, with PDF as per the table below. All entries are to be decimal values accurate to the nearest 0.01 P(x) x. P(x) Collapse Al 0.15 2 0.15 3 0.3 0.2 5 0.05 0.1 a. Complete the table above. b. Determine the expected value. EX]...
Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans. These pretest thoughts are a form of priming. The 200 students in group 1 had a mean score of 21.4 with a standard deviation...