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part 1
a) find the sample mean...
hi there, having trouble with stats homework In a random sample of 22 people, the mean...
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...
Use the standard normal distribution or the t distribution to construct a 9 % confidence interval...
Use the standard normal distribution or the t distribution to construct a 9 % confidence interval for the population mean Justify your decision if neither distribution can be used, explain why Interpret the results ln a random sample of 17 mortgage institutions, the mean interest rate was 3.69% and the standard deviation was 36% Assume the iterest rates are normally distributed Which distribution should be used to construct the confidence interval? ○ A. Use a t-distribution because it is a...
Use the standard normal distribution or the t-distribution to construct a 90% confidence interval for the...
Use the standard normal distribution or the t-distribution to construct a 90% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 14 mortgage institutions, the mean interest rate was 3.44% and the standard deviation was 0.49%. Assume the interest rates are normally distributed. Which distribution should be used to construct the confidence interval? select a choice below A. Use a t-distribution because the interest...
6.2.36-1 Question Help Use the standard normal distribution or the t-distribution to construct a 95% confidence...
6.2.36-1 Question Help Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 15 mortgage institutions, the mean interest rate was 3.42% and the standard deviation was 0.44%. Assume the interest rates are normally distributed Which distribution should be used to construct the confidence interval? O O O O O A. Use a...
need help. please this question hace more parts! please i want to put the rest in...
need help.
please this question hace more parts! please i want to put the rest
in the comments. so you cna help me out!
WSUIT Help Use the standard normal distribution or the distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results In a random sample of 13 mortgage institutions, the mean interest rate was 3.56% and the standard deviation was 0.37%. Assume the...
6.2.19-T Question Help In a random sample of four microwave ovens, the mean repair cost was...
6.2.19-T Question Help In a random sample of four microwave ovens, the mean repair cost was $85.00 and the standard deviation was $13.00. Assume the population is normally distributed and use a t-distribution to construct a 99% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. The 99% confidence interval for the population mean μ is (DD (Round to two decimal places as needed.) 6.2.21-T Question Help In a random sample...
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the...
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.99, x=13.1, s=3.0, n= 6 Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.95, x=14.5, s=0.55, n= 15 Use the given confidence interval to find the margin of error and the sample mean. (12.7,19.9The sample mean is In a random sample of 18 people, the mean...
here are summary statistics for randomly selected weights of newborn girls: n=235, 2 of 6 (1...
here are summary statistics for randomly selected weights of
newborn girls: n=235,
2 of 6 (1 complete) HW Score: 16.67%, 1 of 6 Score: 0 of 1 pt 7.2.9-T Question Help Here are summary statistics for randomly selected weights of newborn girls: n=235, x = 27.6 hg, s = 7.6 hg. Construct a confidence interval estimate of the mean Use a 99% confidence level. Are these results very different from the confidence interval 25.9 g < 30.5 hg with only...
Johnson -STA 220- LBT 5521- Fall 2019 Homework: Section 7-3 Homework Save Score: 0 of 1...
Johnson -STA 220- LBT 5521- Fall 2019 Homework: Section 7-3 Homework Save Score: 0 of 1 pt 1 of 19 (10 complete) HW Score: 56%, 14 of 25 pts 7.3.9-T Assigned Media Question Help Use technology and the given confidence level and sample data to find the confidence interval for the population mean Assume that the population does not exhibit a normal distribution. Weight lost on a diet 99% confidence x-2.0 kg s 4.5 kg n 41 What is the...
Homework: HW 9.1 9.2 9.3 25 of 40 (26 complete) Score: 0 of 1 pt 9.2.17...
Homework: HW 9.1 9.2 9.3 25 of 40 (26 complete) Score: 0 of 1 pt 9.2.17 A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, X, is found to be 106, and the sample standard deviation, s, is found to be 10. (a) Construct a 90% confidence interval about if the sample size, n, is 18. (b) Construct a 90% confidence interval about if the sample size, n, is 29....
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...
Use the standard normal distribution or the t distribution to construct a 9 % confidence interval for the population mean Justify your decision if neither distribution can be used, explain why Interpret the results ln a random sample of 17 mortgage institutions, the mean interest rate was 3.69% and the standard deviation was 36% Assume the iterest rates are normally distributed Which distribution should be used to construct the confidence interval? ○ A. Use a t-distribution because it is a...
6.2.36-1 Question Help Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 15 mortgage institutions, the mean interest rate was 3.42% and the standard deviation was 0.44%. Assume the interest rates are normally distributed Which distribution should be used to construct the confidence interval? O O O O O A. Use a...
need help.
please this question hace more parts! please i want to put the rest
in the comments. so you cna help me out!
WSUIT Help Use the standard normal distribution or the distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results In a random sample of 13 mortgage institutions, the mean interest rate was 3.56% and the standard deviation was 0.37%. Assume the...
6.2.19-T Question Help In a random sample of four microwave ovens, the mean repair cost was $85.00 and the standard deviation was $13.00. Assume the population is normally distributed and use a t-distribution to construct a 99% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. The 99% confidence interval for the population mean μ is (DD (Round to two decimal places as needed.) 6.2.21-T Question Help In a random sample...
here are summary statistics for randomly selected weights of
newborn girls: n=235,
2 of 6 (1 complete) HW Score: 16.67%, 1 of 6 Score: 0 of 1 pt 7.2.9-T Question Help Here are summary statistics for randomly selected weights of newborn girls: n=235, x = 27.6 hg, s = 7.6 hg. Construct a confidence interval estimate of the mean Use a 99% confidence level. Are these results very different from the confidence interval 25.9 g < 30.5 hg with only...
Johnson -STA 220- LBT 5521- Fall 2019 Homework: Section 7-3 Homework Save Score: 0 of 1 pt 1 of 19 (10 complete) HW Score: 56%, 14 of 25 pts 7.3.9-T Assigned Media Question Help Use technology and the given confidence level and sample data to find the confidence interval for the population mean Assume that the population does not exhibit a normal distribution. Weight lost on a diet 99% confidence x-2.0 kg s 4.5 kg n 41 What is the...
Homework: HW 9.1 9.2 9.3 25 of 40 (26 complete) Score: 0 of 1 pt 9.2.17 A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, X, is found to be 106, and the sample standard deviation, s, is found to be 10. (a) Construct a 90% confidence interval about if the sample size, n, is 18. (b) Construct a 90% confidence interval about if the sample size, n, is 29....
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