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Q7: The result of a survey indicates that 65% of the members of a physical club...
A survey was conducted by the local chapter of an environmental club regarding the ownership of...
A survey was conducted by the local chapter of an environmental club regarding the ownership of alternative fuel vehicles (AFVs) among the members of the group. An AFV is a vehicle that runs on fuel other than petroleum fuels (petrol and diesel). It was found that of the 80 members of the club surveyed, 26 of them own at least one hybrid car, 12 of them own at least one electric car, and 2 of them own at least one...
9. Members at a popular fitness club currently pay $40 per month to be a member...
9. Members at a popular fitness club currently pay $40 per month to be a member of the club. The owner of the club wants to raise the fee to $50 but is concerned that some members will quit if the fee increases. To investigate, the owner plans to survey a random sample of the members and construct a 95% confidence interval for the proportion of all members who would quit if the fee was increased to $50. (a) Explain...
A survey is conducted at a college with 600 students, 150 faculty members, and 200 administrators....
A survey is conducted at a college with 600 students, 150 faculty members, and 200 administrators. Each of these 950 individuals has a single email address listed in the online campus directory. Suppose one email address was selected at random. What is the probability it would be (a) a student, (b) a faculty member, (c) an administrator, (d) a faculty member or administrator, and (e) anyone except an administrator? (f) Explain your answers to someone who has never had a...
Suppose that 12% of adults are classified as hypertensive. For people that are truly hypertensive the...
Suppose that 12% of adults are classified as hypertensive. For people that are truly hypertensive the probability of a positive test is 0.85. Also, for people that are not truly hypertensive the probability of a positive test is 0.24. What is the probability that an individual is not hypertensive? A test on probability is to be given next Friday. Suppose that 80 percent of the students study for the test and 20 percent do not. If a student studies for...
City Racquetball Club (CRC) offers racquetball and other physical fitness facilities to its members. There are...
City Racquetball Club (CRC) offers racquetball and other physical fitness facilities to its members. There are four of these clubs in the metropolitan area. Each club has between 1,800 and 2,500 members. Revenue is derived from annual membership fees and hourly court fees. The annual membership fees are as follows: Individual............................................................................................. $ 40 Student................................................................................................ 25 Family.................................................................................................. 95 The hourly court fees vary from $6 to $10 depending upon the season and the time of day (prime versus nonprime time). The...
Question 1 (30 marks) (a) 500 adults were asked whether or not they will get married in the next ...
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...
B) Epidemiologists claim that the probability of breast cancer among Caucasian women in their mid-50s is...
B) Epidemiologists claim that the probability of
breast cancer among
Caucasian women in their mid-50s is 0.005. An established test
identified
people who had breast cancer and those that were healthy. A
new
mammography test in clinical trials has a probability of 0.85 for
detecting
cancer correctly. In women without breast cancer, it has a chance
of 0.925
for a negative result. If a 55-year-old Caucasian woman tests
positive for
breast cancer, what is the probability that she, in fact,...
BINOMİAL PROBABnrTY ) The college bealth center did a survey Md fond thnt 20% of students...
BINOMİAL PROBABnrTY ) The college bealth center did a survey Md fond thnt 20% of students mie agarettes. A group of 9 students randomly eit at the same table Fnd the a) Five studenta at the table smoks b) No student at the table smoke c) Les than 3 students at the table smoke AT'V commentator daime that 40% of all football injurien are knee injure. What is the probability that in a game with 5 reported injurien a) All...
4. One flaw in attendance mechanisms is that UC Merced students work jobs to make wages....
4. One flaw in attendance mechanisms is that UC Merced students work jobs to make wages. Suppose that there is a student whose job has a time conflict with our course, and it is tough to predict when we will see that student the next time. So far this semester, that student has a 20.59% attendance score. What is the probability that we will observe 3 absences and then observe the student in class on the fourth lecture. 5. According...
4-A new publisher of educational texts reported: "We had teachers use our texts in six Algebra I classes and other teachers use another leading text in six Algebra I classes. We tested the student...
4-A new publisher of educational texts reported: "We had teachers use our texts in six Algebra I classes and other teachers use another leading text in six Algebra I classes. We tested the students at the end of the semester and students using our text scored 11 points higher." A) Consider possible confounding variables. B) Consider the source. C) Consider the population. D) Consider the sampling method. 5- To determine the percent of wives in "happy" marriages, a psychologist at...
A survey was conducted by the local chapter of an environmental club regarding the ownership of alternative fuel vehicles (AFVs) among the members of the group. An AFV is a vehicle that runs on fuel other than petroleum fuels (petrol and diesel). It was found that of the 80 members of the club surveyed, 26 of them own at least one hybrid car, 12 of them own at least one electric car, and 2 of them own at least one...
9. Members at a popular fitness club currently pay $40 per month to be a member of the club. The owner of the club wants to raise the fee to $50 but is concerned that some members will quit if the fee increases. To investigate, the owner plans to survey a random sample of the members and construct a 95% confidence interval for the proportion of all members who would quit if the fee was increased to $50. (a) Explain...
B) Epidemiologists claim that the probability of
breast cancer among
Caucasian women in their mid-50s is 0.005. An established test
identified
people who had breast cancer and those that were healthy. A
new
mammography test in clinical trials has a probability of 0.85 for
detecting
cancer correctly. In women without breast cancer, it has a chance
of 0.925
for a negative result. If a 55-year-old Caucasian woman tests
positive for
breast cancer, what is the probability that she, in fact,...
BINOMİAL PROBABnrTY ) The college bealth center did a survey Md fond thnt 20% of students mie agarettes. A group of 9 students randomly eit at the same table Fnd the a) Five studenta at the table smoks b) No student at the table smoke c) Les than 3 students at the table smoke AT'V commentator daime that 40% of all football injurien are knee injure. What is the probability that in a game with 5 reported injurien a) All...
4. One flaw in attendance mechanisms is that UC Merced students work jobs to make wages. Suppose that there is a student whose job has a time conflict with our course, and it is tough to predict when we will see that student the next time. So far this semester, that student has a 20.59% attendance score. What is the probability that we will observe 3 absences and then observe the student in class on the fourth lecture. 5. According...
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