Some five courses are offered on campus in a semester. The group of students who take...

Some five courses are offered on campus in a semester. The group of students who take at least one of these courses consists of 155 students. There are 80 students registered in each course. For any two among these courses, there are precisely 40 students who take both of them. For any three of these courses, there are precisely 20 students who take all three of them. For any four among these courses, there are precisely 10 students who take every one of these four courses. How many students in this group take every one among the five courses in this memorable semester?

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orchestra answered 1 year ago

Five students take statistics one semester and college algebra the next semester. Their overall course grades...

Five students take statistics one semester and college algebra the next semester. Their overall course grades (%) are listed in the table. Student Statistics College Algebra 1 80.0% 85.5% 2 72.6% 71.0% 3 99.0% 93.2% 4 91.3% 93.0% 5 68.9% 74.8% a. Which statistical procedure, listed in the Assessment, would be most appropriate to test the claim "student overall course grades are the same in both courses"? Options are: t-Test: Paired Two Sample for Means t-Test: Two-Sample Assuming Equal Variances...

Students who take on-line courses tend to find that there are both benefits (positives) and drawbacks...

Students who take on-line courses tend to find that there are both benefits (positives) and drawbacks (negatives) from this type of course. What do you think the positives and negatives will be?

In order to estimate the proportion of students on a particular campus who favor a campus-wide...

In order to estimate the proportion of students on a particular campus who favor a campus-wide ban on alcohol, a social researcher interviewed a random sample of 100 students from the college population. She found that 36% of the sample favored banning alcohol. (9 points) a) Find the mean of the sampling distribution of proportions (µp). b) Find the standard error of the proportion (σp). c) Find the estimated standard error of the proportion (sp).

There are students, as well as faculty, who are active in campus politics. All who are...

There are students, as well as faculty, who are active in campus politics. All who are active in campus politics are encouraged to join the university governing board. If the statements above are true, which of the following must also be true? a. All who are encouraged to join the university governing board are active in campus politics. b. All who are encouraged to join the university governing board are faculty or students. c. Some who are encouraged to join...

ERDQuestion A group of students attend an end of semester party. The party was described by...

ERDQuestion A group of students attend an end of semester party. The party was described by one attendee as‘very exciting’. Students played computer gamestill almost midnight! Each of the students has a name and a Player Name e.g. Fred Smith "The Slayer". Each of the games played has a name and a description. Each console has a unique serial no, name and the year of manufacture. The games can all be played on any ofthe various consolesthat have been broughtto...

It is estimated that 30% of university students are taking five or more classes this semester...

It is estimated that 30% of university students are taking five or more classes this semester (let us call them full-load students). Among the full-load students, 20% are working part-time. On the other hand, among the non-full-load students, 60% are working part-time. a) When a university student is randomly selected, what is the probability that one is a full-load student and working part-time? [2] Define event A as: university students taking five or more classes (or being full-load students). Define...

The health assessment nursing class is one of the most important courses that students take in...

The health assessment nursing class is one of the most important courses that students take in nursing school. Nurses have many responsibilities, including assessing the needs of their patients. Nurses must make observations and use assessment tools to determine the course of treatment for each of their patients. The initial health assessment is vital to the patient’s continuous well-being. The health assessment course that nursing student take in nursing school can provide the foundation for the job that nurses perform...

A local university reports that 3% of its students take their general education courses on a...

A local university reports that 3% of its students take their general education courses on a pass/fail basis. Assume that 50 students are registered for a general education course. a. Define the random variable in words for this experiment. b. What is the expected number of students who have registered on a pass/fail basis? c. What is the probability that exactly 5 are registered on a pass/fail basis? d. What is the probability that more than 3 are registered on...

Online courses: A sample of 266 students who were taking online courses were asked to describe...

Online courses: A sample of 266 students who were taking online courses were asked to describe their overall impression of online learning on a scale of 1–7, with 7 representing the most favorable impression. The average score was 5.65 , and the standard deviation was 0.95. (a) Construct a 99% confidence interval for the mean score. (b) Assume that the mean score for students taking traditional courses is 5.58 . A college that offers online courses claims that the mean...

Online courses: A sample of 264 students who were taking online courses were asked to describe...

Online courses: A sample of 264 students who were taking online courses were asked to describe their overall impression of online learning on a scale of −17, with 7 representing the most favorable impression. The average score was 5.57, and the standard deviation was 0.93. Construct a 99.8% interval for the mean score. Round the answers to two decimal places. A 99.8% confidence interval for the mean score is <μ<

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