Question

Statistics professor has 115 students in a statistics class and would like to estimate the number...

Statistics professor has 115 students in a statistics class and would like to estimate the number of hours each student studying for the last exam. A random sample of 41 students was found to study an average of 7.3 hours with a standard deviation of 1.9 hours. The 95% confidence interval to estimate the average number of hours studying for the exam is

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Thank you.

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 professor wants to estimate how many hours per week students study. A simple random sample...
A professor wants to estimate how many hours per week students study. A simple random sample of 78 students had a mean of 15.0 hours of studying per week. Construct and interpret a 90% confidence interval for the mean number of hours a student studies per week. Assume the population standard deviation is known to be 2.3 hours per week
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 24 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 2.8 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 23 students, and the distribution of total study hours per week is bell-shaped with a mean of 14 hours and a standard deviation of 3.4 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
For a 4-units class like Statistics, students should spend average of 12 hours studying for the...
For a 4-units class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 23 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 3 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between hours and hours on Statistics each week. b) 95% of the students spend between hours and...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 20 students, and the distribution of total study hours per week is bell-shaped with a mean of 13 hours and a standard deviation of 3.4 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between ____ hours and ____ hours on Statistics each week. b) 95% of the students spend between...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the...
For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 21 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 3.5 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between  hours and  hours on Statistics each week. b) 95% of the students spend between  hours and  hours on Statistics each...
A professor at a university wants to estimate the average number of hours of sleep students...
A professor at a university wants to estimate the average number of hours of sleep students get during exam week. On the first day of exams, she asked 21 students how many hours they had slept the night before. The average of the sample was 4.72 with a standard deviation of 1.58. When estimating the average amount of sleep with a 90% confidence interval, what is the margin of error? Question 3 options: 1) 0.5947 2) 0.5933 3) 0.3448 4)...
A questionnaire about study habits was given to a random sample of students taking a large...
A questionnaire about study habits was given to a random sample of students taking a large introductory stats class. The sample of 35 students reported that they spent an average of 115 minutes per week studying stats. Assume that the standard deviation is 40 minutes. A) Give a 95% confidence interval for the mean time spent studying stats by students in this class. B) Is it true that 95% of the students in the class have weekly studying times that...
A professor at a local community college is interested in studying the amount of hours that...
A professor at a local community college is interested in studying the amount of hours that a college student works per week. If the professor would like to construct a 99% confidence interval for the mean hours worked per week by college students within 1.4 hours, what sample size would the professor need? A previous study found that the standard deviation for the amount of hours students work per week was 3.19 hours.
. At a local university, the professor of sleep would like to know the mean time...
. At a local university, the professor of sleep would like to know the mean time a college student sleeps per nite. Ten randomly selected students were asked how long they slept at night. The mean time they slept was 7.1 hours, and the standard deviation was 0.78 hour. a) Find the best point estimate for the true mean time: ______________ b) Find the 95% confidence interval for the population mean: ______________________ c) A second professor believes that the mean...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT