Question

In: Statistics and Probability

In 2015, the student body of Lock Haven University consisted of 30% freshmen, 24% sophomores, 26%...

In 2015, the student body of Lock Haven University consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.

Freshmen

83

Sophomores

68

Juniors

85

Seniors

64


We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. The calculated value for the test statistic equals?

Solutions

Expert Solution


Related Solutions

In 2015, the student body of a Lock Haven University consisted of 30% freshmen, 24% sophomores,...
In 2015, the student body of a Lock Haven University consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification. Freshmen 83 Sophomores 68 Juniors 85 Seniors 64 We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year. At 95% confidence, the null...
***URGENT*** TEST 1. At one large university, freshmen account for the 40% of the student body,...
***URGENT*** TEST 1. At one large university, freshmen account for the 40% of the student body, if a group of 15 students is randomly chosen by the school newspaper to comment on textbook prices; what is the probability that at most three of the students are from freshmen? Round your answer to four decimal places (Use Binomial distribution to model this probability) 2.    The Test score in statistics of a class of students has a normal distribution with mean 65...
The student body of a large university consists of 30% Business majors. A random sample of...
The student body of a large university consists of 30% Business majors. A random sample of 6 students is selected. A. What is the probability that exactly 4 are business majors? B. What is the probability that no more than 2 are business majors? C. What is the probability that at least 3 are business majors? D. What is the probability that less than 5 are business majors?
At Finy Community College, 63% of the student body are freshmen. A random sample of 42...
At Finy Community College, 63% of the student body are freshmen. A random sample of 42 student names taken from the Dean’s Honor List over the past several semesters showed that 28 were freshmen. Does this indicate the population proportion of freshmen on the Dean’s list is greater than 63%? Use a 1% level of significance. (a) state the null hypothesis and (b) the alternate hypothesis, (c) State the type of test that you will use to test the hypothesis,...
at a large University the graduation rate for the general student body was reported to be...
at a large University the graduation rate for the general student body was reported to be 0.66 we want to compare the center spread and shape of the distribution of sample proportion graduating from random samples of five students compared to the distribution and random samples of 50 students what is the center of the distribution for samples of size 5 round the answer to two decimal places
A survey at Evashevski University showed that 75% of the student body believes that the school...
A survey at Evashevski University showed that 75% of the student body believes that the school offers classes at appropriate times during the school day. To investigate with this feeling is shared by students specifically within the business department, the department polled a sample of 100 business students; 64 said they thought that classes were offered at appropriate times during the school day. Use an α = .10. A. Provide the appropriate hypothesis test criteria: HO: p ≥ ≤ =...
Music Group Control Group 30 28 30 23 32 25 23 26 28 30 24 20...
Music Group Control Group 30 28 30 23 32 25 23 26 28 30 24 20 26 29 29 20 30 28 26 26 20 27 20 21 24 29 26 23 33 27 21 20 31 26 22 26 26 28 25 27 30 27 SPSS.1 A study reveals that older adults work out a little harder when they listen to music. The table below contains the data from two groups of older adults: one group listened to music...
At Case Western Reserve University, 46.6% of the student body are undergraduates and 53.4% of those...
At Case Western Reserve University, 46.6% of the student body are undergraduates and 53.4% of those enrolled are graduate students. 60.7% of undergraduate students participate in extracurricular activities, while only 32.1% of graduate students participate in extracurricular activities. A student who participates in extracurricular activities is randomly selected. What is the probability that the student is an undergraduate? Use Baye’s theorem to solve this problem. (Write your answer as a percent rounded to 1 decimal place.)
[6] Sixty percent of the student body at the University of British Columbia is from British...
[6] Sixty percent of the student body at the University of British Columbia is from British Columbia, 30% percent are from other Canadian provinces and territories, and the remainder are international students. Twenty percent of students from British Columbia live in the dormitories, whereas 50% of students from other Canadian provinces and territories live in the dormitories. Finally, 80% of the international students live in the dormitories. What percentage of University of British Columbia students live in the dormitories? Given...
Jamie is a 26-year-old graduate student at the University of Arkansas—Monticello. She is working on her...
Jamie is a 26-year-old graduate student at the University of Arkansas—Monticello. She is working on her PhD in biology. As a biologist, she enjoys spending time outdoors when she can. The campus is on the edge of the woods and it is a nice place for Jamie to walk and relax to relieve the stress of graduate school. Jamie has not been able to enjoy her walks lately due to the fatigue she has been experiencing. Others have noticed that...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT