Question 4A bank with a branch located in a commercial district of a city has the business objective ofdeveloping an improved process for serving customers during the noon-to-1 P.M. lunch period.Management decides to first study the waiting time in the current process. The waiting timedefined as the number of minutes that elapses from when the customer enters the line until heor she reaches the teller window.Waiting Time5 to 910 to 1415 to 1920 to 2425 to 29Commercial3101674Find:a) the meanb) standard deviationc) moded) mediane) coefficient of variation

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Bijou Theater shows vintage movies. Customers arrive at the theater line at the rate of 100 per hour. The ticket seller averages 30 seconds per customer, which includes placing validation stamps on customers' parking lot receipts and punching their frequent watcher cards. (Because of these added services, many customers don't get in until after the feature has started.) (Use the Excel spreadsheet Queue Models.) a. What is the average customer time in the system? Answer is complete and correct. Average customer time O minutes b. What would be the effect on customer time in the system of having a second ticket taker doing nothing but validations and card punching, thereby cutting the average service time to 20 seconds? (Round your answer to 3 decimal places.) Answer is complete and correct. Average time in system 0.750 O minutes c. What would be the customer time in the system if instead of the change in Part b, a second window was opened with each server doing all three tasks? (Do…
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You are the VP, Advertising for “Yo’ Mama” brand, a fashion label that caters to the young, trendy crowd with an urban, hip-hop image. While your customer base has traditionally been largely African-American, you have recognized a tremendous influx of Hispanic consumers into your market. You are preparing for next week’s annual budget meetings and you have decided to recommend an Hispanic-focused advertising campaign if the average monthly per store sales to Hispanic customers are at least the same as the average monthly per store sales to African-American customers in a sample of typical stores (sales data given below). Using an alpha of .05 and the 5-step hypothesis testing process, what will you recommend? Hint: Think about how many data points you actually have.
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Mateo believes that completely cutting caffeine out of a person's diet will allow them more restful sleep at night. He randomly selects 8 adults to help him test this theory. Each person is asked to consume two caffeinated beverages per day for 28 days and then cut back to no caffeinated bevarages for an additional 28 days. During each period, the participants record the number of nights of restful sleep that they had. The following table gives the results of the study. Test Mateo's claim at the 0.05 level of significance. Give answers to 4 decimal places as needed. Number of Nights of Restful Sleep in a Four-Week Period 15 With Caffeine 21 20 22 24 18 21 24 20 26 26 22 21 23 27 23 Without Caffeine a) The normal probability plot showed the differences follow a normal distribution and the boxplot showed no outliers. b) Test the claim (1) Determine the null and alternative hypotheses. Enter correct symbol and values Ho: H₁: (2) Type of test: (3) a = (4) Test statistic (to) = p-value =…
The past records of a supermarket show that its customers spend an average of $110 per visit at this store. Recently the management of the store initiated a promotional campaign according to which each customer receives points based on the total money spent at the store, and these points can be used to buy products at the store. The management expects that as a result of this campaign, the customers should be encouraged to spend more money at the store. To check whether this is true, the manager of the store took a sample of 14 customers who visited the store. The following data give the money (in dollars) spent by these customers at this supermarket during their visits. 106.13 107.43 124.68 124.88 101.17 72.75 85.45 86.05 100.4 98.84 101.63 95.56 89.40 119.52 Assume that the money spent by all customers at this supermarket has a normal distribution. Using a 2.5% significance level, can you conclude that the mean amount of money spent by all customers at this supermarket after the…
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The assembly line workers at Cambridge Motors are paid an hourly wage plus overtime for each hour worked over 40 each week. Overtime is paid at a rate of 12 times hourly wage. Find the amount of gross earnings for the following workers. (Round your answers to 2 decimal places. Leave no cells blank - be certain to enter "0" wherever required. Omit the "S" sign in your response.) Total Hours Worked Gross Earnings Overtime Earnings Hourly Wage $ 6.96 Regular Earnings Name Tom Arruda 39 Janet Dias 42 $7.10 Paul Pijarowski Rosemary Weiss 45 $7.15 $. 41 $7.75 $. 2. %24 %24

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