Question

You want to find out whether year in school affects students’ time spent studying. To do...

You want to find out whether year in school affects students’ time spent studying. To do so, you split your sample of n=100 students into 4 different groups: Freshman, Sophomores, Juniors, and Seniors and measure how long the students study each week. What are the null and alternative hypotheses for this example?

Homework Answers

Answer #1

Null Hypothesis, Ho:

There is no significant difference in the mean time spent studying by Freshman, Sophomores, Juniors, and Seniors i.e.

Alternative Hypothesis, Ha:

There is significant difference in the mean time spent studying by Freshman, Sophomores, Juniors, and Seniors i.e. There exists at least one      

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose you are interested in testing whether mean time spent in the library is different for...
Suppose you are interested in testing whether mean time spent in the library is different for different classifications of students (freshmen, sophomores, juniors, and seniors). If you conduct an ANOVA to test your hypothesis, you would expect that ____________. a. SSA is greater than SSW when the null hypothesis is not true b. An answer cannot be deterined from the information provided. c. SSA is about the same as SSW when the null hypothesis is true d. SSW is greater...
At a school rally, a group of sophomore students organized a free raffle for prizes. They...
At a school rally, a group of sophomore students organized a free raffle for prizes. They claim that they put the names of all the students in the school in the basket and they randomly drew 36 names out of the basket. Of the prize winners, 6 were freshmen, 14 were sophomores, 9 were juniors and 7 were seniors. The results do not seem that random to you. You think it is a little fishy that sophomores organized the raffle...
You want to estimate the average time college students spend studying per week. You know that...
You want to estimate the average time college students spend studying per week. You know that the population standard deviation for studying time per week for college students is 3.5 hours. You want a 99% confidence interval with a margin of error of 30 minutes (0.50 hours). How many students do you need in your study? Group of answer choices 188.24 students 325 students 324.9 students 189 students
You wondered whether STUDYING affects TEST SCORES on an upcoming exam. You provide half the students...
You wondered whether STUDYING affects TEST SCORES on an upcoming exam. You provide half the students with study material and half the students with no study material. (a) Define each variable. Is it a DEPENDENT VARIABLE or an INDEPENDENT variable? (b) Would this question have a between-subjects or within-subjects design? (c) Is this a one-tailed or two-tailed test?
Students at the local high school are given the SAT in their freshman year. They are...
Students at the local high school are given the SAT in their freshman year. They are given the same test again as seniors. Their scores on the math section are listed below. It is reasoable to assume that the population variances are equal. Freshmen Seniors 736 519 681 601 497 421 565 478 557 585 546 409 517 712 697 708 414 664 569 484 612 511 648 429 A:What are the hypotheses if you want to test whether or...
One Sample t-test. A high school principal wants to know whether holding a review session affects...
One Sample t-test. A high school principal wants to know whether holding a review session affects final exam performance. Out of a large class, he selects a random sample of 9 students for the review session. Here are the results on the final exam: x bar= 28, s= 4, n= 9. In previous semesters, the final exam average was 24. Conduct a one-sample t-test to see if the average final exam score increase was real or if it was just...
You do a survey of business students and liberal arts school students to find out how...
You do a survey of business students and liberal arts school students to find out how many times a week they read a daily newspaper. In each group, you interview 100 students. You find the following: Xb = 4.5 times per week Sb = 1.5 Xia = 5.6 times per week Sia = 2.0 Test the hypothesis that there is no significant difference between these two samples.
A sociologist thinks that middle school boys spent less time studying in 1981 than middle school...
A sociologist thinks that middle school boys spent less time studying in 1981 than middle school boys do today. A study was conducted in 1981 to find the time that middle school boys spent studying on weekdays. The results (in minutes per weekday) are shown below. 31.9 35.4 28.0 39.1 30.5 31.9 33.0 29.6 35.7 30.2 38.8 35.9 37.1 36.2 32.6 36.9 24.2 28.5 28. 7 41.1 33.8 32.1 28.7 35.4 36.6. 34.3 35.5 34.2 33.8 25.3 27.7 21.9 30.0...
You are interested in the time students usually spend studying for the final exams. Assume that...
You are interested in the time students usually spend studying for the final exams. Assume that the total study time during the final week in the semester among students is approximately Normally distributed with mean= 12 hours and a standard deviation = 4.4 hours . You initially plan to take a simple random sample of size n=50 and compute the average total study time. What is the standard deviation for the average studying time in hours? Imagine you sample 50...
It is believed that students who begin studying for final exams a week before the test...
It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test the hypothesis that students who study one week before score greater than students who study the night before. A hypothesis test for two independent samples is run based on your data and a p-value is calculated to be 0.0053. What is the appropriate conclusion? Question 9 options: 1) The...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT