4. In a local university, 10% of the students live in the dormitories. A random sample...
In a local university, 66% of the students live in the dormitories. A random sample of 70 students is selected for a particular study. We know that the standard error of the proportion is 0.0566. Find the probability that the sample proportion (the proportion living in the dormitories) is between 0.64 and 0.67.
In a local university, 66% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. We know that the standard error of the proportion is 0.0530. Find the probability that the sample proportion (the proportion living in the dormitories) is between 0.65 and 0.68.
QUESTION 7 1 poit Exhibit 7-3 In a local university, 40% of the students live in the dormitories. A random sample of 80 students is selected for a particular study Refer to Exhibit 7-3. The probability that the sample proportion (the proportion living in the dormitories) is at least 0.30 is O 0.4664 O 0.9328 0.9664 0.0336
In a large university, the proportion of students who live in the dormitories is 0.30. A random sample of 150 students is selected for a particular study. The standard deviation of p ¯, known as the standard error of the proportion (σ p ¯) is approximately
# 5 in a local university, 40% ofthe students live on the campus. A random sample of 96 tudents is selected for a special study. 쩍-96 41 ates. n error ofproportion-....6千 A. What is the probability that the sample proportion living at campus is between 0. 30 and 0. 50?
QUESTION 35 (Problem Set #4) It is known that a bottle of cologne has on average 4 ounces of content with the standard deviation of 0.13 ounces. A random sample of 100 bottles is selected. The standard deviation of the sample mean is a. 0.542 ounces b. 0.013 ounces c. 0.500 ounces d. 4 ounces 3.75 points QUESTION 36 (Problem Set #5) In a large university, 70% of the students live in the dormitories. A random sample of 110...
Of the students living in the dormitories at a university, 65% live in the west hall, and the rest at the south tower. A sandwich shop randomly mails a coupon for a free sandwich to 27 % of those at the west hall, and to 16% of those living at the south tower. Let D be the event that the person receives a coupon, E1 be the event that the person is living in the west hall, and E2 be...
In a large university, 20% of the students are business majors. A random sample of 100 students is selected, and their majors are recorded. d. What is the probability that the sample contains between 12 and 14 business majors?
7. In a large university (45,000 students) it is known that 71% of the students live on campus. a) If we considered samples of 200 students, describe the sampling distribution of the sample proportion of students who live on campus. (Hint – we said there were three things you needed to mention in a full description, and there is check you must perform to be able to describe one of those 3 things!) [3] b) Show the work in finding...
In a large university, 15% of the students are female. If a random sample of twenty students is selected, a. what is the probability that the sample contains exactly four female students? b. what is the probability that the sample will contain no female students? c. what is the probability that the sample will contain exactly twenty female students? d. what is the probability that the sample will contain more than nine female students? e. what is the probability that...