MBA 624 Quiz 4 Questions and Answers/100% Correct/(Take Test: Ch4 HW)

MBA 624 Quiz 4 Questions and Answers/100% Correct/(Take Test: Ch4 HW) MBA 624 Quiz 4 Questions and Answers/100% Correct/(Take Test: Ch4 HW) Take Test: Ch4 HW QUESTION 1 A computer system for an organization generates four-letter temporary passwords. The total number of passwords that the system can generate is . 14,950 358,800 456,976 none of the above QUESTION 2 A multiple choice test has 12 questions, with each question having five choices. The number of different ways a student can answer the 12 questions is . 792 244,140, 625 95,040 248,832 QUESTION 3 A psychology class consists of 14 business students and 21 non-business students. Sixteen students in this class are male. Eight students are both female and business majors. The number of men in the class who are not business majors is . 1 1 6 8 1 0 QUESTION 4 A random sample of computer users were asked which browser they primarily relied on for surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results. Browser Desktop Laptop Internet Explorer 18 56 Firefox 7 37 Chrome 24 77 Safari 3 18 Other 3 7 The probability that a randomly selected person from this sample used the Internet Explorer or the Chrome browser is . 0.81 4 0.65 1 0.70 0 0.58 5 QUESTION 5 A random sample of computer users were asked which browser they primarily relied on for surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results. Browser Desktop Laptop Internet Explorer 18 56 Firefox 7 37 Chrome 24 77 Safari 3 18 Other 3 7 The probability that a randomly selected person from this sample used the Internet Explorer and the Firefox browser is . 0.3 2 0.5 7 0.0 0 0.4 5 Browser Desktop Laptop Internet Explorer 18 56 Firefox 7 37 Chrome 24 77 Safari 3 18 Other 3 7 The probability that a randomly selected person from this sample used the Safari browser or used a laptop computer is . 0.79 2 0.78 0 0.50 9 0.62 2 QUESTION 7 A random sample of computer users were asked which browser they primarily relied on for surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results. Browser Desktop Laptop Internet Explorer 18 56 Firefox 7 37 Chrome 24 77 Safari 3 18 Other 3 7 The probability that a randomly selected person from this sample used the Chrome browser and used a laptop computer is . 0.10 4 0.44 0 0.23 7 0.30 8 A random sample of computer users were asked which browser they primarily relied on for surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results. Browser Desktop Laptop Internet Explorer 18 56 Firefox 7 37 Chrome 24 77 Safari 3 18 Other 3 7 Given that the randomly selected computer used the Chrome browser, the probability that the computer was a laptop is . 0.76 2 0.43 3 0.55 7 0.64 0 QUESTION 9 A random sample of computer users were asked which browser they primarily relied on for surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results. Browser Desktop Laptop Internet Explorer 18 56 Firefox 7 37 Chrome 24 77 Safari 3 18 Other 3 7 Given that the randomly selected computer was a desktop, the probability that the computer used the Internet Explorer browser is . 0.03 7 0.32 7 0.08 2 0.11 2 A survey asked randomly selected adults 18-29 years old to indicate their working status. The results are shown in the following table. Working Status Frequency Working full-time 103 Working part-time 60 Student, not working 31 Unemployed 56 The probability that a randomly selected adult 18-29 years old is unemployed is . 0.6 0 0.2 2 0.3 0 0.0 9 QUESTION 11 A survey asked randomly selected adults 18-29 years old to indicate their working status. The results are shown in the following table. Working Status Frequency Working full-time 103 Working part-time 60 Student, not working 31 Unemployed 56 Calculating the probability that a randomly selected adult 18-29 years old is unemployed is using probability. empiric al classical subjecti ve simple QUESTION 12 A textbook sales representative is responsible for 25 schools and needs to choose three of these schools to work with today. The number of different ways he can schedule a time to call these schools is . 13,8 00 26,3 69 2,30 0 15,6 25 QUESTION 13 According to a recent survey, 38% of U.S. households used only cell phones for their phone service. A random sample of four households was selected. The probability that the first three used only cell phones, and the fourth one had a land line is . 0.15 4 0.03 4 0.07 0 0.19 5 QUESTION 14 According to a survey of business executives, 78% received a pay raise when they asked for one. A random sample of four executives was selected. The probability that all four received a raised when they asked for one is . 0.37 0 0.12 7 0.05 6 0.23 7 QUESTION 15 After Bill attends the first statistics class of the semester and reads the syllabus, he decides that the most likely grade he will receive for the course is a "B". This is an example of using probability. classical empiric al subjecti ve QUESTION 16 Alison is the chair of a business department that consists of nine full-time faculty. She needs to schedule a meeting with each faculty to review their performance over the past year. The number of different ways these nine faculty can be scheduled is . 362,88 0 3,628,8 80 40,320 162,50 0 QUESTION 17 Mathematically, it is impossible for P(A and B) P(A). True False QUESTION 18 Ten percent of customers who walk into a golf store purchase a golf club and 30% of customers purchase golf balls. Six percent of customers purchase both clubs and balls. The percentage of customers who do not purchase clubs or balls is . 0.3 5 0.2 4 0.4 1 0.6 6 QUESTION 19 Craftsman sells 10-digit keypads that are installed on homes to open the garage door. The consumer chooses a 5-number code when programming the keypad. The total number of codes that the consumer can choose from is . 100,0 00 30,24 0 57,12 8 QUESTION 20 Costco sells a matching set of T-shirts and shorts. The T-shirt comes in four colors and six sizes. The shorts come in three colors and five sizes. The number of unique color and size combinations of T-shirts and shorts is . 36 0 42 5 62 5 50 0 QUESTION 21 There are 30 Major League Baseball teams in the National League. Five of these teams will make the playoffs at the end of the season. The number of unique groups of teams that can make the playoffs is . 752,988 142,506 252,640 17,100,7 20 QUESTION 22 You can conclude that, because events are not independent, they will be mutually exclusive. True False probability requires that you count the frequency that an event occurs through an experiment and calculate the probability from the experiment's relative frequency distribution. Empiric al Subjecti ve Simple Classica l QUESTION 24 If a household has at least one cat, there is a 30% probability that the household has at least one dog. Thirty percent of households have at least one cat and 33% of households have at least one dog. Given that a household has at least one dog, the probability that the same household has at least one cat is . 0.4 8 0.0 6 0.1 7 0.2 7 QUESTION 25 If a household has at least one cat, there is a 30% probability that the household has at least one dog. Thirty percent of households have at least one cat and 33% of households have at least one dog. Given that a household does not have at least one dog, the probability that the same household does not have at least one cat is . 0.3 7 0.5 4 0.6 1 0.6 9 The following contingency table shows the number of customers who bought various brands of digital cameras at Walmart and Best Buy. Camera Brand Best Buy Walmart Canon 21 32 Nikon 8 37 Sony 16 30 FujiFilm 5 12 Other 49 40 The probability that a randomly selected customer from this sample bought a Canon camera or purchased a camera at Walmart is . 0.46 5 0.53 9 0.68 8 0.60 0 QUESTION 27 The following contingency table shows the number of customers who bought various brands of digital cameras at Walmart and Best Buy. Camera Brand Best Buy Walmart Canon 21 32 Nikon 8 37 Sony 16 30 FujiFilm 5 12 Other 49 40 The probability that a randomly selected customer from this sample bought a Sony camera and purchased the camera at Best Buy is . 0.27 0 0.06 4 0.11 4 0.16 8 The probability of winning a 5/25 lottery game where 5 numbers are picked from a range of 25 is . 1/53,130 1/353,77 5 1/32,852 1/6,375,6 00 QUESTION 29 Thirty-five percent of customers at a restaurant order an alcoholic drink and an appetizer with dinner. Ten percent of customers do not order alcoholic drink or an appetizer with dinner. Sixty-five percent of diners order an appetizer with dinner. The percentage of customers who order an alcoholic drink but do not order an appetizer is . 0.3 5 0.2 5 0.1 2 0.3 0 1 points QUESTION 30 probability is the probability of Event A occurring without any additional information that could influence the event. Subjectiv e Posterior Condition al Prior