A car manufacturer is concerned about poor customer satisfaction at one of its dealerships. The management decides to evaluate the satisfaction surveys of its next 50 customers. The dealer will be fined if the number of customers who report favorably is between 33 and 37. The dealership will be dissolved if fewer than 33 customers report favorably. It is known that 72% of the dealer’s customers report favorably on satisfaction surveys. [You may find it useful to reference the z table.]
a. What is the probability that the dealer will be
fined? (Round intermediate calculations to at least 4
decimal places, “z” value to 2 decimal places, and final
answer to 4 decimal places.)
b. What is the probability that the dealership will be dissolved? (Round intermediate calculations to at least 4 decimal places, “z” value to 2 decimal places, and final answer to 4 decimal places.)
A car manufacturer is concerned about poor customer satisfaction at one of its dealerships. The management...
At a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is .33. a. Find the probability that in a sample of 8 customers, none of the 8 will order a nonalcoholic beverage. (Round your answer to 4 decimal places.) Probability: b. Find the probability that in a sample of 8 customers, at least 5 will order a nonalcoholic beverage. (Round your answer to 4 decimal places.) Probability: Find the probability that...
Beer bottles are filled so that they contain an average of 475 ml of beer in each bottle. Suppose that the amount of beer in a bottle is normally distributed with a standard deviation of 8 ml. [You may find it useful to reference the z table.] a. What is the probability that a randomly selected bottle will have less than 470 ml of beer? (Round intermediate calculations to at least 4 decimal places, “z” value to 2 decimal places,...
Please explain how to find on the z table. And offer step by step. please and thanks ?? Beer bottles are filled so that they contain an average of 455 ml of beer in each bottle. Suppose that the amount of beer in a bottle is normally distributed with a standard deviation of 8 ml. [You may find it useful to reference the z table.] a. What is the probability that a randomly selected bottle will have less than 452...
A consumer advocacy group is concerned about the variability in the cost of prescription medication. The group surveys eight local pharmacies and obtains the following prices (in %) for a particular brand of medication: (You may find it useful to reference the appropriate table: chi-square table or F table) 25.50 22.00 30.00 30.00 24.50 22.50 38.00 36.50 Click here for the Excel Data File a. Calculate the point estimate for the population variance. (Round intermediate calculations to at least 4...
Beer bottles are filled so that they contain an average of 440 ml of beer in each bottle. Suppose that the amount of beer in a bottle is normally distributed with a standard deviation of 8 ml. [You may find it useful to reference the z table. a. What is the probability that a randomly selected bottle will have less than 437 ml of beer? (Round intermediate calculations to at least 4 decimal places, "" value to 2 decimal places,...
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a standard deviation of $500. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions (a) What is the likelihood the sample mean is at least $25.00 decimal places and final answer to 4 decimal places.) Round z value to 2 Probability What is the likelihood the sample mean is greater than $2250 but less...
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50, with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. (a)What is the likelihood the sample mean is at least $25.00? (Round z value to 2 decimal places and final answer to 4 decimal places.) Probability (b)What is the likelihood the sample mean is greater than $22.50 but less an...
Customers make purchases at a convenience store, on average, every nine minutes. It is fair to assume that the time between customer purchases is exponentially distributed. Jack operates the cash register at this store. a-1. What is the rate parameter λ? (Round your answer to 4 decimal places.) a-2. What is the standard deviation of this distribution? (Round your answer to 1 decimal place.) b. Jack wants to take a seven-minute break. He believes that if he goes right after...
A. According to a 2009 Reader's Digest article, people throw away about 10% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 192 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.18? Note: You should keep at least 4 decimal places for any intermediate calculations you make to match wamap's approach and calculations. Answer = (Enter your answer as a number...
As operations manager, you are concerned about being able to meet sales requirements in the coming months. You have just been given the following production report: JAN FEB MAR APR Units produced 2,340 1,840 2,840 3,040 Hours per machine 331 204 406 324 Number of machines 4 6 5 6 Find the average of the monthly productivity figures (units per machine hour). (Do not round intermediate calculations. Round your answer to 2 decimal places.)