Question

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?

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
A student group claims that first year students at a university must study 2.5 hours per...
A student group claims that first year students at a university must study 2.5 hours per night during the school week. A skeptic suspect that they study less than that on average. A class survey finds that the average study time claimed by 269 students is 137 minutes. Regard these students as a random sample of all first-year students and suppose we know that study times follow a Normal distribution with standard deviation of 65 minutes. Is there evidence that...
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
Hypothesis testing: A student group claims that first-year students at a university must study 2.25 hours...
Hypothesis testing: A student group claims that first-year students at a university must study 2.25 hours per night during the school week. A skeptic suspects that they study less than that on average. A class survey finds the study time claimed by 259 students is 147 minutes. Regard these students as a random sample of all 1st year students and suppose what study times follow a Normal Distribution with a population standard deviation 62 minutes. Test to see if the...
A college claims that commute times to the school have a mean of 60 minutes with...
A college claims that commute times to the school have a mean of 60 minutes with a standard deviation of 12 minutes.  Assume that student commute times at this college are normally distributed.  A statistics student believes that the variation in student commute times is greater than 12 minutes.  To test this a sample of 71 students in chosen and it is found that their mean commute time is 58 minutes with a standard deviation of 14.5 minutes. At the 0.05 level of...
A study examined possible reasons for students going on academic probation. Students who spent more than...
A study examined possible reasons for students going on academic probation. Students who spent more than 20 hours a week playing video games were classified as "heavy gamers." Of the 342 students on academic probation in the study, 127 were found to be heavy gamers. Calculate the point estimate of the proportion of students on academic probation that are heavy gamers. Round to 2 decimal places. Calculate the 95% confidence interval for the proportion of students that are on academic...
The college board claims that 32% of community college students take five semesters to complete a...
The college board claims that 32% of community college students take five semesters to complete a two-year program. In a survey of 1400 randomly selected community college students enrolled in a two-year program, 401 of them took five semesters to complete their two-year program. Test the college board's claim at a level of significance of 0.01. Calculate the test statistics associated with this hypothesis. (Round your answer to 2 decimal places) Calculate the P-Value associated with the test statistics that...
A recent study by XYZ Research Agency of college students found that 33% of students drink...
A recent study by XYZ Research Agency of college students found that 33% of students drink energy drinks. A sample of 35 students found that 8 drink energy drinks. Assume alpha of .05 Find the following: Test Statistic Group of answer choices A. .23 B. .32 C. .45 D. .90 A recent study by XYZ Research Agency of college students found that 33% of students drink energy drinks. A sample of 35 students found that 8 drink energy drinks. Assume...
In a study of the effect of college student employment on academic performance, the following summary...
In a study of the effect of college student employment on academic performance, the following summary statistics for GPA were reported for a sample of students who worked and for a sample of students who did not work. The samples were selected at random from working and nonworking students at a university. (Use a statistical computer package to calculate the P-value. Use ?employed ? ?not employed. Round your test statistic to two decimal places, your df down to the nearest...
A study was conducted to estimate the effect of college student employment on academic performance. In...
A study was conducted to estimate the effect of college student employment on academic performance. In a random sample of 15 working students, the mean GPA was 2.4 with a standard deviation of 0.05. In a random sample of 13 nonworking students, the mean GPA was 2.3 with a standard deviation of 0.03. Assume the populations are normal with equal variances. Round your critical value to three decimals. Enter your answers rounded to four decimal places. (a). The pooled sample...
In a study of the effect of college student employment on academic performance, the following summary...
In a study of the effect of college student employment on academic performance, the following summary statistics for GPA were reported for a sample of students who worked and for a sample of students who did not work. The samples were selected at random from working and nonworking students at a university. (Use a statistical computer package to calculate the P-value. Use μemployed − μnot employed. Round your test statistic to two decimal places, your df down to the nearest...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT