Regier mework A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed the length of the calls, in minutes, follows the normal probability distribution. The mean length of time per call was 53 minutes and the standard deviation was 0.60 minutes. Use Appendix 3.3 a. What is the probability that calls last between 5.3 and 6.0 minutes? (Round your z value to 2 decimal places and final answer to 4 decimal places.) Probability that calls ances b. What is the probability that calls last more than 60 minutes? (Round your value to 2 decimal places and final answer to 4 decimal places c. What is the probability that calls last between 6.0 and 70 minutes? (Round your value to 2 decimal places and final answer to 4 decimal places.) S. 8 3 Y W E R. K K G H F Dental Assistant R. da liscence work 6 Saved Probability that calls c. What is the probability that calls last between 6.0 and 70 minutes? (Round your value to 2 decimal places and final answer to 4 decimal places.) Probability that calls d. What is the probability that calls last between 5.0 and 70 minutes? (Round your value to 2 decimal places and final answer to 4 decimal places.) e. As part of her report to the president, the director of communications would like to report the length of the longest induration 5 percent of the calls. What is this time? (Round your value to 2 decimal places and final answer to 2 decimal places) Pre 1 of 3 Next > 2 3 R W E Saved A normal population has a mean of 22 and a standard deviation of 4. Use Appendix 8.3 a. Compute the z value associated with 26. (Round your answer to 2 decimal places.) b. What proportion of the population is between 22 and 267 (Round -score computation to 2 decimal places and your final answe. to 4 decimal places.) Proportion c. What proportion of the population is less than 197 (Round -score computation to 2 decimal places and your final answer to 4 decimal places) Proportion Next > 8 4 5 6. 3 R W E Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes. The longest one-way travel time is in New York City, where the mean time is 38.5 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 72 minutes. Use Appendix 3.3. a. What percent of the New York City commutes are for less than 26 minutes? (Round your intermediate calculations and final answer to 2 decimal places.) Percant % b. What percent are between 26 and 34 minutes? (Round your intermediate calculations and final answer to 2 decimal places) Percent c. What percentare between 26 and 45 minutes? (Round your intermediate calculations and final answer to 2 decimal places) Next > (re % B 4 Y U W E E K G H D F ework Seved The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between $15 and $29 per share. What is the probability that the stock price will be: a. More than $22? (Round your answer to 4 decimal places.) Probability b. Less than or equal to $19? (Round your answer to 4 decimal places.) Probability Ned> 5 2 E TA R Customers experiencing technical difficulty with their internet cable hookup may call an 800 number for technical support. It takes the technician between 30 seconds and 12 minutes to resolve the problem. The distribution of this support time follows the uniform distribution a. What are the values for a and bin minutes? (Do not round your intermediate calculations. Round your answers to 1 decimal place.) b-1. What is the mean time to resolve the problem? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) Mean -2. What is the standard deviation of the time? (Do not round your intermediate calculations. Round your answer to deci places) 8 3 W E R G H F Homework Seved Customers experiencing technical difficulty with their internet cable hookup may call an 800 number for technical support it takes the technician between 30 seconds and 12 minutes to resolve the problem. The distribution of this support time follows the uniform distribution a. What are the values for a and bin minutes? (Do not round your intermediate calculations, Round your answers to 1 decimal place.) b Print b-1. What is the mean time to resolve the problem? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) Mea b-2. What is the standard deviation of the time? Do not round your intermediate calculations. Round your answer to 2 decimal places) S 8 5 2 3 W E R K G H . F D A S M N V . ork Saved -2. What is the standard deviation of the time? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) Standard deviation c. What percent of the problems takes more thap 5 minutes to resolve? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) (Porcent d. Suppose we wish to find the middle 50% of the problem-solving times. What are the end points of these two times? (Do not round your Intermediate calculations. Round your answers to 3 decimal places.) End point 1 Endpoint 2 Next > 2 3 E R work Saved The mean of a normal probability distribution is 380; the standard deviation is 10. a. About 68% of the observations lie between what two values? Value 1 Value 2 b. About 95% of the observations lie between what two values? nces Value 1 Value 2 c. Practically all of the observations lie between what two values? Value 1 Valge 2 MA 2 3 R W E Saved A normal population has a mean of 22 and a standard deviation of 4. Use Appendix 8.3 a. Compute the z value associated with 26. (Round your answer to 2 decimal places.) b. What proportion of the population is between 22 and 267 (Round -score computation to 2 decimal places and your final answe. to 4 decimal places.) Proportion c. What proportion of the population is less than 197 (Round -score computation to 2 decimal places and your final answer to 4 decimal places) Proportion Next > 8 4 5 6. 3 R W E Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes. The longest one-way travel time is in New York City, where the mean time is 38.5 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 72 minutes. Use Appendix 3.3. a. What percent of the New York City commutes are for less than 26 minutes? (Round your intermediate calculations and final answer to 2 decimal places.) Percant % b. What percent are between 26 and 34 minutes? (Round your intermediate calculations and final answer to 2 decimal places) Percent c. What percentare between 26 and 45 minutes? (Round your intermediate calculations and final answer to 2 decimal places) Next > (re % B 4 Y U W E E K G H D F ework Seved The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between $15 and $29 per share. What is the probability that the stock price will be: a. More than $22? (Round your answer to 4 decimal places.) Probability b. Less than or equal to $19? (Round your answer to 4 decimal places.) Probability Ned> 5 2 E TA R Customers experiencing technical difficulty with their internet cable hookup may call an 800 number for technical support. It takes the technician between 30 seconds and 12 minutes to resolve the problem. The distribution of this support time follows the uniform distribution a. What are the values for a and bin minutes? (Do not round your intermediate calculations. Round your answers to 1 decimal place.) b-1. What is the mean time to resolve the problem? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) Mean -2. What is the standard deviation of the time? (Do not round your intermediate calculations. Round your answer to deci places) 8 3 W E R G H F Homework Seved Customers experiencing technical difficulty with their internet cable hookup may call an 800 number for technical support it takes the technician between 30 seconds and 12 minutes to resolve the problem. The distribution of this support time follows the uniform distribution a. What are the values for a and bin minutes? (Do not round your intermediate calculations, Round your answers to 1 decimal place.) b Print b-1. What is the mean time to resolve the problem? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) Mea b-2. What is the standard deviation of the time? Do not round your intermediate calculations. Round your answer to 2 decimal places) S 8 5 2 3 W E R K G H . F D A S M N V . ork Saved -2. What is the standard deviation of the time? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) Standard deviation c. What percent of the problems takes more thap 5 minutes to resolve? (Do not round your intermediate calculations. Round your answer to 2 decimal places.) (Porcent d. Suppose we wish to find the middle 50% of the problem-solving times. What are the end points of these two times? (Do not round your Intermediate calculations. Round your answers to 3 decimal places.) End point 1 Endpoint 2 Next > 2 3 E R work Saved The mean of a normal probability distribution is 380; the standard deviation is 10. a. About 68% of the observations lie between what two values? Value 1 Value 2 b. About 95% of the observations lie between what two values? nces Value 1 Value 2 c. Practically all of the observations lie between what two values? Value 1 Valge 2 MA