Historically, the proportion of students entering a university who finished in 4 years or less was...

Question

Question

Historically, the proportion of students entering a university who finished in 4 years or less was...

Historically, the proportion of students entering a university who finished in 4 years or less was 60%. To test whether this proportion has decreased, 113 students were examined and 52% had finished in 4 years or less. To determine whether the proportion of students who finish in 4 year or less has statistically significantly decreased (at the 5% level of signficance), what is the critical value? (please round your answer to 2 decimal places)

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Solution 0 fren dat nale Tost stashes PO-P) 0 52-0 60 113 Thes ts the ks stashcs value 2 1-P 2.3 6-3218 2-N tue have suffictent eviunG eject ut。

Add a comment

Answer 2

Similar Homework Help Questions

Historically, the proportion of students entering a university who finished in 4 years or less was...

Historically, the proportion of students entering a university who finished in 4 years or less was 60%. To test whether this proportion has decreased, 116 students were examined and 48% had finished in 4 years of less has statistically significantly decreased (at the 10% level of significance), what is the critical value?
QUESTION 13 5 points In a sample of 90 grocery store customers. it is found that...

QUESTION 13 5 points In a sample of 90 grocery store customers. it is found that 63% of them were buying 15 items or fewer. Determine the upper bound of the 95% confidence interval for the proportion of customers that buy 15 items or fewer? (please express your answer AS A DECIMAL using 4 decimal places) QUESTION 14 5 points Historically, the proportion of students entering a university who finished in 4 years or less was 60%. To test whether...
Historically, the proportion of people who trade in their old car to a car dealer when...

Historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the previous 6 months, in a sample of 115 new-car buyers, 46 have traded in their old car. To determine (at the 5% level of significance) whether the proportion of new-car buyers that trade in their old car has statistically significantly decreased; what is the critical value? (please round your answer to 2 decimal places)

A university has found over the years that out of all the students who are offered...

A university has found over the years that out of all the students who are offered admission, the proportion who accept is .60. After a new director of admissions is hired. the university wants to check if the proportion of students accepting has increased significantly. Suppose they offer admission to 1250 students and 823 accept. Is this 12. evidence at the a = 01 level that there has been a significant increase in proportion of students accepting admission? 13. A...
Question 4 In the past, 60% of all undergraduate students enrolled at a State University in...

Question 4 In the past, 60% of all undergraduate students enrolled at a State University in NY earned their degrees within four years of matriculation. Administrators want to test the claim made by some faculty memebers that this proportion has fallen below the historical value of 60%. A random sample of 95 students from the class that matriculated in the fall of 2012 was recently selected to test this hypothesis. Administrators found that 44 of these 95 students graduated in...
The average GPA score for students at a university was 3.75. Five years later, a professor...

The average GPA score for students at a university was 3.75. Five years later, a professor wants to perform a hypothesis test to determine whether the average GPA score of students at the university has changed. He picks a random sample of 50 students and obtains their mean GPA score, which is 3.10. The population standard deviation is known as 1.15. Test whether the claim that the average GPA score at the university has dropped from 3.75 is supported or...

you extract a sample of 115 students from this university. The sample proportion is the proportion...

you extract a sample of 115 students from this university. The sample proportion is the proportion of students in this sample who live on campus. The standard deviation of the sampling distribution of this sample proportion, rounded to four decimal places, is: 5. A random sample of 82 customers, who visited a department store, spent an average of $71 at this store. Suppose the standard deviation ofexpenditures at this store is σ. $19. The 98% confidence interval for the population...
At a local university, a sample of 49 evening students was selected in order to determine...

At a local university, a sample of 49 evening students was selected in order to determine whether the average age of the evening students is significantly different from 21. The average age of the students in the sample was 23.25 years. The population standard deviation is known to be 7 years. Determine whether or not the average age of the evening students is significantly different from 21. Use a .1 level of significance. Calculate the critical value. I know the...
10. A university is concerned about the proportion of students that graduate. To address the issue,...

10. A university is concerned about the proportion of students that graduate. To address the issue, it does the following. First, it gets a random sample of incoming students. Some of the students in this random sample will be required to have extra meetings with a series of advisors and some will not. It randomly decides which of the students will have this requirement and which will not. In the data, 464 of the 764 students that had this requirement...

Scenario Three: A group of parents believes that the proportion of students who find their college...

Scenario Three: A group of parents believes that the proportion of students who find their college experience extremely rewarding does not equal 50%. They decide to test this hypothesis using a significance level of .05. They conduct a random sample of 100 students and 34 say they find their college experience extremely rewarding. You only need to redo the steps below to receive full credit for scenario three. Based on the type of test this is (right, left, or two-tailed);...

Historically, the proportion of students entering a university who finished in 4 years or less was...

Homework Answers