Question

3. A local college is studying the number of credit hours students take and how many...

3. A local college is studying the number of credit hours students take and how many total minutes they spend reading for fun/pleasure (e.g., non-class-related materials). They don’t know whether to expect that students will read more or less when enrolled in a lot of classes/hours or fewer hours. They study 68 students and find a correlation of -0.30.

(A) State the decision rule for the 0.05 significance level.

Reject H0 if t > _________

(B) Compute the value of the test-statistic: __________________

(C) Can we conclude that the correlation in the population is different than zero?

Select one: “Reject H0” or “do not reject H0” We conclude that the correlation in the population is zero. (can or cannot) (less than or greater than)

(D) Explain what this means – how are these variables related. Is it strong, weak, moderate? Estimate a scatterplot of these data with a rough sketch – be sure to label the axes. Think about what to put on the xaxis and what to place on the y-axis.

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
The number of hours 10 students spent studying for a test and their scores on that...
The number of hours 10 students spent studying for a test and their scores on that test are shown in the table. Is there enough evidence to conclude that there is a significant linear correlation between the​ data? Use alphaequals0.05. Hours, x   Test score, y 0   40 1   40 2   55 4   49 4   65 5   67 5   73 6   70 7   81 8   93 Setup the hypothesis for the test. Upper H 0H0​: rhoρ ▼ less than or equals≤...
A class survey in a large class for first-year college students asked, "About how many hours...
A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 493 students was x = 15.3 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation σ = 8.5 hours in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university....
For a sample of 116 college students, the relationship between the reported hours of sleep during...
For a sample of 116 college students, the relationship between the reported hours of sleep during the previous 24 hours and the reported hours of study during the same period was studied. Data for y = hours of sleep the previous day and x = hours of studying the previous day for n = 116 college students were computed. Some regression results for those data are shown in the following table. Regression output Predictor Coef SE Coef T P Constant...
A survey in a large class for first-year college students asked, "About how many hours do...
A survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 461 students was x = 15.3 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation σ = 8.5 hours for all first-year students at this university. Does the survey results provide evidence (at the 0.05 level) of students claiming to study more than 15 hours per...
A class survey in a large class for first‑year college students asked, “About how many hours...
A class survey in a large class for first‑year college students asked, “About how many hours do you study during a typical week?” The mean response of the 463463 students was ?¯=13.7x¯=13.7 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation ?=7.4σ=7.4 hours in the population of all first‑year students at this university. Regard these students as an SRS from the population of all first‑year students at this university. Does the study give...
A class survey in a large class for first-year college students asked, "About how many hours...
A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" There were 464 responses to the class survey. Suppose that we know that the study time follows a Normal distribution with standard deviation σ = 8.6 hours in the population of all first-year students at this university. One student claimed to study 10,000 hours per week (10,000 is more than the number of hours in a year)....
A class survey in a large class for first-year college students asked, "About how many hours...
A class survey in a large class for first-year college students asked, "About how many hours do you study during a typical week?" The mean response of the 468 students was x = 15.3 hours. Suppose that we know that the study time follows a Normal distribution with standard deviation σ = 8.5 hours in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university....
A class survey in a large class for first-year college students asked, "About how many minutes...
A class survey in a large class for first-year college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 284 students was x⎯⎯⎯x¯ = 138 minutes. Suppose that we know that the studey time follows a Normal distribution with standard deviation σσ = 65 minutes in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university....
College students are a unique population when it comes to drinking behavior, given that while in...
College students are a unique population when it comes to drinking behavior, given that while in school, they often become able to drinking legally. We think that attitudes towards drinking may be different among different types of college students, particularly those that attend a traditional 4-year college and live on campus versus those that live off campus. The idea here is that students that are not around their peers as much (i.e., those that live off campus), are likely to...
A class survey in a large class for first-year college students asked, "About how many minutes...
A class survey in a large class for first-year college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 272 students was x¯¯¯x¯ = 148 minutes. Suppose that we know that the studey time follows a Normal distribution with standard deviation σσ = 65 minutes in the population of all first-year students at this university. Regard these students as an SRS from the population of all first-year students at this university....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT