Question

In: Statistics and Probability

2. At a certain college, the student senate conducted a poll of 200 students to ask...

2. At a certain college, the student senate conducted a poll of 200 students to ask about using student services. In the poll, 24% of students had used tutoring services in the past week, 72% had used the library in the past week, and 14% had used both tutoring and the library in the past week.

a. What percent of students used either tutoring or the library in the past week?

b. What percent of students used neither tutoring nor the library in the past week?

c. What percent of students did not use the library? d. Given that a student visited the library, what is the probability that they used tutoring services?

d. That an instructor opposes the policy given that they teach in MSHP.

Solutions

Expert Solution

Let A be the event that students had used tutoring services in the past week

B be the event that students had used library services in the past week

Then

The probability that the students had used tutoring services in the past week  

The probability that the students had used library services in the past week

a) The probability that students used either tutoring or the library in the past week=

The percent of students used either tutoring or the library in the past week = 82%

b) The probability that students used neither tutoring nor the library in the past week =

The percent of students that used neither tutoring nor the library in the past week = 18%

c) The percent of students that did not use the library = 28%

d) Given that a student visited the library, what is the probability that they used tutoring services


Related Solutions

A student at a junior college conducted a survey of 20 randomly selected​ full-time students to...
A student at a junior college conducted a survey of 20 randomly selected​ full-time students to determine the relation between the number of hours of video game playing each​ week, x, and​ grade-point average, y. She found that a linear relation exists between the two variables. The​ least-squares regression line that describes this relation is ModifyingAbove y with caret equals negative 0.0559 x plus 2.9289. (a) Predict the​ grade-point average of a student who plays video games 8 hours per...
A student at a junior college conducted a survey of 20 randomly selected? full-time students to...
A student at a junior college conducted a survey of 20 randomly selected? full-time students to determine the relation between the number of hours of video game playing each? week, x, and? grade-point average, y. She found that a linear relation exists between the two variables. The? least-squares regression line that describes this relation is y = -0.0503x + 2.9381. (a) Predict the grade-point average of a student who plays video games 8 hours per week. The predicted grade-point average...
A student at a junior college conducted a survey of 20 randomly selected​ full-time students to...
A student at a junior college conducted a survey of 20 randomly selected​ full-time students to determine the relation between the number of hours of video game playing each​ week, x, and​ grade-point average, y. She found that a linear relation exists between the two variables. The​ least-squares regression line that describes this relation is ModifyingAbove y with caret equals negative 0.0592 x plus 2.9446. ​(a) Predict the​ grade-point average of a student who plays video games 8 hours per...
A poll is conducted in a certain city, regarding a certain referendum A random sample of...
A poll is conducted in a certain city, regarding a certain referendum A random sample of 100 shows that 62 are IN FAVOR of the referendum. (3)CONTINUED Please determine an 80% confidence interval for the proportion of the population in that city who ARE IN FAVOR of the referendum.
The college student senate is sponsoring a spring break Caribbean cruise raffle. The proceeds are to...
The college student senate is sponsoring a spring break Caribbean cruise raffle. The proceeds are to be donated to the Samaritan Center for the Homeless. A local travel agency donated the cruise, valued at $2000. The students sold 2782 raffle tickets at $5 per ticket. (a) Kevin bought twenty tickets. What is the probability that Kevin will win the spring break cruise to the Caribbean? (Round your answer to five decimal places.) What is the probability that Kevin will not...
2. I stand outside the student union and conduct a poll of passing students about their...
2. I stand outside the student union and conduct a poll of passing students about their favorite fast food place. There are 6 response options = McDonald's, Wendy's, Burger King, Taco Bell, Popeye's, and Arby's. I also collect the student's year in school for demographic purposes - 5 levels - First Year, Sophomore, Junior, Senior, and Grad Student. I build a two-way table of this data to prepare to conduct a Chi-square analysis. How many degrees of freedom would my...
Problem 2. Test Scores Distribution. In a certain exam is taken by 200 students, the average...
Problem 2. Test Scores Distribution. In a certain exam is taken by 200 students, the average score was 60 out of maximum of 100 points. It was also found that 32 students scored more than 75 points. Assuming that the exam scores were well represented by a Gaussian probability density function, (2a) Determine the mean of the distribution. (2b) Determine the standard deviation of the distribution. (2c) Determine the number of students who scored more than 90 points. (2d) Determine...
A poll of 1500 college students asked whether or not they had used the Internet to...
A poll of 1500 college students asked whether or not they had used the Internet to find a place to live sometime within the past year. There were 525 students who answered “Yes”; the other 975 answered “No”. a)What is n? What is the value of X? Find the sample proportion pˆ . d)Can we use normal approximation for this sample? e)What normal model are you using X or Pˆ ? Please find the mean and standard deviation appropriately. f)...
ASK YOUR TEACHER According to a survey conducted in a certain year by the Federal Communications...
ASK YOUR TEACHER According to a survey conducted in a certain year by the Federal Communications Commission (FCC) of 3005 adults who were home broadband users, 31.5% of those surveyed had switched their service over the past 3 years. Of those who had switched service in the past 3 years, 53% were very satisfied, 37% were somewhat satisfied, and 10% were not satisfied with their service. Of the 68.5% who had not switched service in the past 3 years, 46%...
Students at a certain school were​ surveyed, and it was estimated that 19​% of college students...
Students at a certain school were​ surveyed, and it was estimated that 19​% of college students abstain from drinking alcohol. To estimate this proportion in your​ school, how large a random sample would you need to estimate it to within 0.08 with probability 0.99​, if before conducting the study​ (a) you are unwilling to predict the proportion value at your school and​ (b) you use the results from the surveyed school as a guideline. a. n= b. n=
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT