Question

A college claims that its average class size is more than 30 students in a class....

  1. A college claims that its average class size is more than 30 students in a class. A outside organization takes a sample of 41 classrooms and found that the average number of students in a class was 25, with a sample standard deviation of 2.5 students. The study is going to use an alpha of .05 for their study. Please answer the following questions. (points: 10)
    1. What is the null and alternative hypotheses for the question? Please write out the hypotheses below. (3)
    2. What is the critical value for this distribution? (1)
    3. What is the value of the Statistic for the sample? Show work (2) write it using the equation tool below.
    4. Do we reject the null hypothesis? Please write the hypotheses in the context of the problem. (4)
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Lehman College claims that its average class size is more than 30 students in a class....
Lehman College claims that its average class size is more than 30 students in a class. A outside organization takes a sample of 40 classrooms to see how many students are in each class. The organization found that the average number of students in a class was 25, with a sample standard deviation of 16 students. The study is going to use an alpha of .05 for their critical values. Please answer the following questions. (points: 10) What is the...
Suppose a university advertises that its average class size is 30 or less. A student organization...
Suppose a university advertises that its average class size is 30 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 43 classes was​ selected, and the average class size was found to be 32.4 students. Assume that the standard deviation for class size at the college is 7 students. Using alpha equals 0.01​, complete parts a and b below. a. Does the...
6. A university student claims that on average, full-time students study more than 30 hours per...
6. A university student claims that on average, full-time students study more than 30 hours per week. A statistics class conducts a study to test the claim. The students randomly sample 15 students and find ?=32.4 hours and ?=4.2 hours. a) State the null and alternative hypotheses. b) Determine the outcome of the student’s test at the: i) At the 5% significance level. (∝=0.05) ii) At the 1% significance level. ∝=0.01
A small college with 300 students claims that its students have an average IQ of 100....
A small college with 300 students claims that its students have an average IQ of 100. A sample of 9 of the 30 students in the intermediate statistics class had an average of 110 with a calculated standard deviation of 12. IQ tests, like most standardized tests, are designed so that the distribution of scores is approximately normal. Using a level of significance of 0.01, is there any evidence that the students in this class are any dumber or smarter...
Suppose a university advertises that its average class size is 36 or less. A student organization...
Suppose a university advertises that its average class size is 36 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 40 classes was​ selected, and the average class size was found to be 38.7 students. Assume that the standard deviation for class size at the college is 8 students. Using alpha equals 0.05​, complete parts a and b below. A. determine the...
The student academic group on a college campus claims that freshman students study at least 2.5...
The student academic group on a college campus claims that freshman students study at least 2.5 hours per day, on average. One Introduction to Statistics class was skeptical. The class took a random sample of 30 freshman students and found a mean study time of 137 minutes with a standard deviation of 45 minutes. If α = 0.01 (or 99% confidence level), is the student academic group’s claim correct?
HYPOTHESES ABOUT VARIANCES A college dean claims that standard deviation of students’ ages is no more...
HYPOTHESES ABOUT VARIANCES A college dean claims that standard deviation of students’ ages is no more than 3 years. A sample of 25 students’ ages yields a standard deviation of 3.8 years. At the .05 level, is there evidence to reject this claim?
The dean of students of a large private college claims that the average distance commuting students...
The dean of students of a large private college claims that the average distance commuting students travel to the campus is 32 miles. The commuting students feel otherwise. A sample of 64 students was randomly selected and yielded a mean of 35 miles and a standard deviation of 5 miles. Identify the null and alternative hypotheses. Test the dean’s claim at the 5 percent level of significance (α = 0.05) using critical approach and state a conclusion.    (Hint: two-tailed test,...
The administration at your college announces that, on average, commuting students live farther than 30 miles...
The administration at your college announces that, on average, commuting students live farther than 30 miles from campus. The announcement came as somewhat of a surprise and took place at a press conference where it was important to make the point that the college attracts students who live 'far' from campus. A student advocacy group takes a random sample of 9 commuting students and records how far, in miles, they live from campus: 19,22,25,28,30,35,40,46,50. a. Write a set of appropriate...
Suppose a university advertises that its average class size is 32 or less. A student organization...
Suppose a university advertises that its average class size is 32 or less. A student organization is concerned that budget cuts have led to increased class sizes and would like to test this claim. A random sample of 39 classes was​ selected, and the average class size was found to be 34.7 students. Assume that the standard deviation for class size at the college is 7 students. Using α=0.01​, complete parts a and b below. a. Does the student organization...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT