Question

In the study of the wide ranges in the academic success of college freshmen, one obvious...

In the study of the wide ranges in the academic success of college freshmen, one obvious factor is the amount of time spent studying. At the, test the 0.05 significance level, test the claim that the standard deviation is more than 4.00 hours. The sample consists of 30 randomly selected freshmen who have a standard deviation of 5.33 hours.

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
From past studies, the average time college freshmen spend studying in 22 hours per week. The...
From past studies, the average time college freshmen spend studying in 22 hours per week. The standard deviation is 4 hours. This year, 60 students were surveyed, and the average time that they spent studying was 20.8 hours. Test the claim that the time students spend studying has not changed. Use a=1%
6.1 question 18 How much do you study? A survey among freshmen at a certain university...
6.1 question 18 How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 27 and standard deviation 7. Use the TI-84 PLUS calculator to answer the following. Round the answer to at least four decimal places. (a) What proportion of students studied more than 38 hours? (b) What is the probability that a randomly selected student spent between 15...
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...
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?
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...
1. Identify the correct HYPOTHESES used in a hypothesis test of the following claim and sample...
1. Identify the correct HYPOTHESES used in a hypothesis test of the following claim and sample data: Claim: “The average weekly number of hours spent studying by students who sit in the front of the classroom is greater than that of students who sit in the back of the classroom.” Dozens of randomly selected students were asked how many hours they study per week. There were 35 students who said that they tend to sit toward the front of the...
Test the claim that the mean GPA of college freshmen is higher than 2.20 at the...
Test the claim that the mean GPA of college freshmen is higher than 2.20 at the significance level 0.05 Based on a sample of 25 college freshmen, theeir mean GPA is 2.41 with standard deviation 0.13 Part 1: what is the H1 statement? Part 2: what is the claim? Part 3: what is the test statistic? Select one: a. Part 1 H1 μ < 2.41 Part 2 Ho is the claim Part 3 test statistic = 1.3316 b. Part 1...
In a survey of a SRS of 463 first-year college students the students were asked about...
In a survey of a SRS of 463 first-year college students the students were asked about studying habits. Among these students the mean response of studying time was 15.3 hours. Suppose we know that study time among similar students varies with standard deviation 8.5 hours. Does this study give statistically significant evidence at the 0.05 significance level that students generally claim to study more than 15 hours per week on average?  For full credit, perform a complete significance test (that is,...
Identify the CONCLUSION of a hypothesis test of the following claim and sample data: Claim: “The...
Identify the CONCLUSION of a hypothesis test of the following claim and sample data: Claim: “The average weekly number of hours spent studying by students who sit in the front of the classroom is greater than that of students who sit in the back of the classroom.” Dozens of randomly selected students were asked how many hours they study per week. There were 35 students who said that they tend to sit toward the front of the classroom, and their...
Identify the P-VALUE in a hypothesis test of the following claim and sample data: Claim: “The...
Identify the P-VALUE in a hypothesis test of the following claim and sample data: Claim: “The average weekly number of hours spent studying by students who sit in the front of the classroom is greater than that of students who sit in the back of the classroom.” Dozens of randomly selected students were asked how many hours they study per week. There were 35 students who said that they tend to sit toward the front of the classroom, and their...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT