Construct a 99?% confidence interval for the population standard deviation sigma at Bank A. Construct a 99?% confidence interval for the population standard deviation sigma at Bank B.
Construct a 99?% confidence interval for the population standard deviation sigma at Bank A. Construct a...
Construct a 95% confidence interval for the population standard deviation sigma of a random sample of 15 men who have a mean weight of 165.2 pounds with a standard deviation of 12.5 pounds. Assume the population is normally distributed.
And construct a 90% confidence interval for the population standard deviation at Bank B The values listed below windows. At Bank B, customers may enter any one of three different lines that have formed at three teler windows. Answer the following questions are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller 6.4 4.2 6.6 5.4 6.8 6.1 9.3 Bank A Bank B 8.5 5.8 click...
99% confidence interval for the mean are assuming that the population standard deviation for the number of soft drinks consumed each week is 0.9. the study found that for a sample of 1097 teenagers the mean number of soft drinks consumed per week is 6.3. construct the desired confidence interval. round to one decimal place. Lower and Upper endpoint?
If Upper X overbar=126 sigma=22 n=31 construct a 99% confidence interval estimate of the population mean, u
Use technology to construct the confidence intervals for the population variance sigma squared and the population standard deviation sigma . Assume the sample is taken from a normally distributed population. cequals 0.95, sequals 38, nequals 20 The confidence interval for the population variance is ( ). (Round to two decimal places as needed.) The confidence interval for the population standard deviation is ( ). (Round to two decimal places as needed.)
construct a confidence interval for the population standard deviation: based on the confidence interval, is it reasonable to believe that the population standard deviation is greater than 0.7 explain Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage from a sample of lenders in Macon, Georgia, on June 20, 2013. Assume that the population is approximately normal. 4.286 4.325 4.134 4.581 4.908 4.429 4.689 3.319 4.84 4.568 4.847 4.996 Send data to Excel Part:...
Use the given data to construct a confidence interval for the population standard deviation,A) SELECT A B) Assume that the population has a normal distribution: The football coach randomly selected the following players and timed how long each player took to perform a certain drill. The times (in minutes) were: 4.1048445 < ơ < 9.8431834 2.7048445 < ơ < 9.2431834 C) D) None of These 4.1048445 < σ < 8.0431834 14,4,5,8, 11,15,10 Find a 95.0 confidence interval for the population...
Use the standard normal distribution or the t-distribution to construct a 99% 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 48 people, the mean body mass index (BMI) was 26.1 and the standard deviation was 6.06. Which distribution should be used to construct the confidence interval? Choose the correct answer below.
Use the given data to construct a confidence interval for the population standard deviation, A SELECT ALL APPLICABLE CHOICES B) Assume that the population has a normal distribution: The football coach randomly selected the following players and timed how long each player took to perform a certain drill. The times (in minutes) were: 4.1048445 < ơ < 9.8431834 2.7048445 < σ < 9.2431834 C) D) None of These 4.1048445 < ơ < 8.0431834 [144, 5, 8,11,15,10] Find a 95.0 confidence...
1. construct a 95% confidence interval where standard deviation is 15 and mean is 99.133 2. construct a 95% confidence interval where standard deviation is 15 and mean is 99 3. construct a 95% confidence interval where standard deviation is 15 and mean is 98.625 i want to add that the population mean is 100 question 1- sample size is 8 question 2- sample size is 20 question 3- sample size is 30