Question

A random sample of 31 patients in a doctor’s office found that waiting times had a...

A random sample of 31 patients in a doctor’s office found that waiting times had a mean of 13 minutes with a standard deviation of 4.1 minutes. Estimate the true population variance with 90% confidence.

Select one:

a. (13.733 , 26.064)

b. (3.539 , 5.222)

c. (3.706 , 5.105)

d. (11.750 , 14.250)

e. (12.527 , 27.270)

f. (3.428 , 3.775)

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

Homework Answers

Answer #1

Note- The values of lower bond is wrong in the option E

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 random sample of 32 patients in a doctor’s office found that waiting times had a...
A random sample of 32 patients in a doctor’s office found that waiting times had a mean of 13 minutes with a standard deviation of 4.1 minutes. Based on this sample, a local doctor claims that the mean waiting time in their office is less than 15 minutes. At a 0.01 significance level, test the doctor's claim. Choose the correct Null & Alternative Hypothesis and Conclusion with appropriate justification: Select one: H0:μ=13 H1:μ<15 Since the P-Value is ≈0.41 and that...
The waiting times​ (in minutes) of a random sample of 20 people at a bank have...
The waiting times​ (in minutes) of a random sample of 20 people at a bank have a sample standard deviation of 4.1 minutes. Construct a confidence interval for the population variance and the population standard deviation . Use a 90% level of confidence. Assume the sample is from a normally distributed population.
A doctor's office collected sample data for 25 patients, and found that they had to wait...
A doctor's office collected sample data for 25 patients, and found that they had to wait an average of 35 minutes with a sample standard deviation of 10 minutes, in order to see the doctor. (The wait times were also found to be normally distributed.) We are interested in calculating a 98% confidence interval for the average waiting time for the population of all patients. PART 1: What would be the standard error of the mean waiting time (to 1...
A doctor's office collected sample data for 25 patients, and found that they had to wait...
A doctor's office collected sample data for 25 patients, and found that they had to wait an average of 35 minutes with a sample standard deviation of 10 minutes, in order to see the doctor. (The wait times were also found to be normally distributed.) We are interested in calculating a 98% confidence interval for the average waiting time for the population of all patients. PART 2: What t value would be used to calculate the interval estimate (to 3...
The waiting times​ (in minutes) of a random sample of 22 people at a bank have...
The waiting times​ (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 4.2 minutes. Construct a confidence interval for the population variance sigma squaredσ2 and the population standard deviation sigmaσ. Use a 90% level of confidence. Assume the sample is from a normally distributed population.
A sample of 25 patients in a doctor's office showed that they had to wait an...
A sample of 25 patients in a doctor's office showed that they had to wait an average of 35 minutes before they could see the doctor. The sample standard deviation is 8 minutes. Assume the population of waiting times is normally distributed. At 99% confidence, compute the margin of error.
The waiting times​ (in minutes) of a random sample of 20 people at a bank have...
The waiting times​ (in minutes) of a random sample of 20 people at a bank have a sample standard deviation of 4.4 minutes. Construct a confidence interval for the population variance sigma squared and the population standard deviation sigma. Use a 90 % level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance sigma squared​? ​( nothing​, nothing​) ​(Round to one decimal place as​ needed.) Interpret the results. Select...
The waiting times​ (in minutes) of a random sample of 21 people at a bank have...
The waiting times​ (in minutes) of a random sample of 21 people at a bank have a sample standard deviation of 4.7 minutes. Construct a confidence interval for the population variance σ2 and the population standard deviation σ  Use a 99% level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance σ2​? (__,__)  ​(Round to one decimal place as​ needed.) What is the confidence interval for the population standard deviation σ​?...
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 27 31...
A random sample of 16 pharmacy customers showed the waiting times below (in minutes). 27 31 17 22 22 18 10 15 19 20 23 18 13 22 27 14 Click here for the Excel Data File Find a 90 percent confidence interval for μ, assuming that the sample is from a normal population. (Round your standard deviation answer to 4 decimal places and t-value to 3 decimal places. Round your answers to 3 decimal places.) The 90% confidence interval...
1. A survey of 30 emergency room patients found that the average waiting time for treatment...
1. A survey of 30 emergency room patients found that the average waiting time for treatment was 174.3 minutes. Assuming that the population standard deviation is 46.5 minutes, find the best point estimate of the population mean. Construct and interpret the 99% confidence interval of the population mean.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT