At a large university it is known that 45% of the students live on campus. The...

At a large university it is known that 45% of the students live on campus. The director of student life is going to take a random sample of 100 students. What is the probability that more than half of the sampled students live on campus?

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orchestra answered 2 years ago

A large university provides housing for 10 percent of its graduate students to live on campus....

A large university provides housing for 10 percent of its graduate students to live on campus. The university’s housing office thinks that the proportion of graduate students looking for housing on campus may be more than 0.10. The housing office decides to survey a random sample of graduate students, and 62 of 481 say that they are looking for housing on campus. At a=.05, is there evidence to support the housing office’s suspicion?

A university is interested in whether there's a difference between students who live on campus and...

A university is interested in whether there's a difference between students who live on campus and students who live off campus with respect to absenteeism. Over one semester, researchers take random samples of on-campus and off-campus students and record the following number of classes each student misses. On-campus: (3, 4, 0, 6, 2, 1, 3, 3, 5, 2, 4, 4, 6, 5, 2) Off-campus: (6, 5, 2, 6, 2, 0, 7, 8, 1, 7, 2, 6, 5, 3, 2) a)...

2. A survey of 200 students is selected randomly on a large university campus. They are...

2. A survey of 200 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. The result of the survey is that 128 of the 200 students responded ”yes." A. Find 98% confidence interval B. How would the confidence interval change if the confidence level had been 90% instead of 98%? C. How would the confidence interval change if the sample size had been 300 instead of 200?...

A survey of 200 students is selected randomly on a large university campus They are asked...

A survey of 200 students is selected randomly on a large university campus They are asked if they use a laptop in class to take notes. The result of the survey is that 70 of the 200 students use laptops to take notes in class. What is the value of the sample proportion? (0.5 pts) What is the standard error of the sampling proportion? (0.5 pts) Construct an approximate 95% confidence interval for the true proportion by going 2 standard...

A survey of 150 students is selected randomly on a large university campus. They are asked...

A survey of 150 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. The result of the survey is that 60 of the 150 students responded "yes." An approximate 98% confidence interval is (0.307, 0.493). Complete parts a through d below. b) How would the confidence interval change if the sample size had been 375 instead of 150? (Assume the same sample proportion.) The new confidence interval...

A survey of 200 students is selected randomly on a large university campus. They are asked...

A survey of 200 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. Suppose that based on the survey, 80 of the 200 students responded "yes." a) What is the value of the sample proportion ModifyingAbove p with caret? b) What is the standard error of the sample proportion? c) Construct an approximate 95% confidence interval for the true proportion p by taking plus or minus 2...

A survey of 250 students is selected randomly on a large university campus. They are asked...

A survey of 250 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. The result of the survey is that 115 of the 250 students responded "yes." An approximate 95% confidence interval is (0.397,0.523). Which of the following are true? If they are not true, briefly explain why not a)95% of the students fall in the interval (0.397,0.523). b) The true proportion of students who use laptops...

A committee surveyed 173 students from a large university campus and found that 53 of them...

A committee surveyed 173 students from a large university campus and found that 53 of them participated in varsity sports. (a) Based on the survey results, construct and interpret a 95% confidence interval for the proportion of students who are varsity athletes. (b) Based on the survey results, test the claim that more than 25% of students are varsity athletes. Use alpha=0.01α = 0.01. Show all work.

It seems to becoming more common for students to live in off campus housing than to...

It seems to becoming more common for students to live in off campus housing than to pay to live on campus. A study at a large state university revealed that in a random sample of 50 seniors last year, 56% lived in off campus housing whereas this year, a random sample of 50 seniors showed that 64% lived in off campus housing. (a) Is this convincing evidence that the true proportion of all seniors that are living in off campus...

In a local university, 40% of the students live in the dormitories. A random sample of...

In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. The probability that the sample proportion (the proportion living in the dormitories) is at least 0.30 is Select one: a. 0.0336 b. 0.9664 c. 0.9328 d. 0.4664

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