Which answer is an example of an experimental study? A researcher asks all the students in a classroom to answer questions about whether they would attempt a difficult math problem if they were promised a candy bar for correctly solving it. The researcher keeps track of students' answers. A researcher attends a math class and watches and records how many students attempt the difficult problems assigned in class. A researcher asks two groups of students to solve a difficult math problem. One of the groups is told that members will receive a candy bar after correctly solving the problem. The other group is not told this. The researcher keeps track of how long people attempt to solve the math problem. A researcher asks a sample of the students in a classroom to answer questions about how long they would attempt to solve a difficult math problem if they were promised a candy bar for correctly solving it. The researcher keeps track of students' answers.

Which answer is an example of an experimental study? A researcher asks all the students in a classroom to answer questions about whether they would attempt a difficult math problem if they were promised a candy bar for correctly solving it. The researcher keeps track of students' answers. A researcher attends a math class and watches and records how many students attempt the difficult problems assigned in class. A researcher asks two groups of students to solve a difficult math problem. One of the groups is told that members will receive a candy bar after correctly solving the problem. The other group is not told this. The researcher keeps track of how long people attempt to solve the math problem. A researcher asks a sample of the students in a classroom to answer questions about how long they would attempt to solve a difficult math problem if they were promised a candy bar for correctly solving it. The researcher keeps track of students' answers.

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter10: Introduction To Simulation Modeling

Section: Chapter Questions

Problem 52P

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The game of Chuck-a-Luck is played as follows: You pick a number between 1 and 6 and toss three dice. If your number does not appear, you lose 1. If your number appears x times, you win x. On the average, use simulation to find the average amount of money you will win or lose on each play of the game.
In this version of dice blackjack, you toss a single die repeatedly and add up the sum of your dice tosses. Your goal is to come as close as possible to a total of 7 without going over. You may stop at any time. If your total is 8 or more, you lose. If your total is 7 or less, the house then tosses the die repeatedly. The house stops as soon as its total is 4 or more. If the house totals 8 or more, you win. Otherwise, the higher total wins. If there is a tie, the house wins. Consider the following strategies: Keep tossing until your total is 3 or more. Keep tossing until your total is 4 or more. Keep tossing until your total is 5 or more. Keep tossing until your total is 6 or more. Keep tossing until your total is 7 or more. For example, suppose you keep tossing until your total is 4 or more. Here are some examples of how the game might go: You toss a 2 and then a 3 and stop for total of 5. The house tosses a 3 and then a 2. You lose because a tie goes to the house. You toss a 3 and then a 6. You lose. You toss a 6 and stop. The house tosses a 3 and then a 2. You win. You toss a 3 and then a 4 for total of 7. The house tosses a 3 and then a 5. You win. Note that only 4 tosses need to be generated for the house, but more tosses might need to be generated for you, depending on your strategy. Develop a simulation and run it for at least 1000 iterations for each of the strategies listed previously. For each strategy, what are the two values so that you are 95% sure that your probability of winning is between these two values? Which of the five strategies appears to be best?
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please answer this question in 30 minutes. Suppose that you are the manager of JCPenney store. Your goal is to increase and control the rate at which store cashiers can successfully sign customers up for JCPenney credit cards. To this end, for each of the eight store cashiers, you observed 50 interactions where the cashier made an attempt to sign a customer up for credit card. The data showed that there was a total of 16 cases in which the cashiers could successfully sign the customer up for a credit card. Now, if you do not want the lower limit to be below .0052, what z-value would this imply? How confident can you be that the actual lower limit is greater than or equal to .0052?
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A manager is simulating the number of times a machine operator stops a machine to make adjustments. After careful study the manager found that the number of stops ranged from one to five per cycle and that each number of stops was equally likely. Using the random numbers 0.17 and 0.47 (in that order), determine how many stops for adjustments each of the next two cycles will have. The first cycle will have stops and the second cycle will have stops.
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A scientist works in a lab with four summer interns and, as it is the end of the summer, he anticipates the head of the lab will ask him which of them he wants to retain. In terms of quality, the scientist and the head of the lab agree that intern A is better than intern B who is better than intern C who is better than intern D. The scientist would like to keep as many interns as possible and, given any number, the highest-quality ones. However, due to funding restrictions, the head of the lab wants to limit the number of interns that are retained. The head of the lab initially tells the scientist to select two interns to retain. After the scientist chooses two interns, the head of the lab decides whether to allow the scientist to retain a third intern. Thus, the sequence of moves is: 1) the scientist chooses two interns (both of whom are then retained); 2) the head of the lab decides either to allow the scientist to choose a third or not; and possibly 3) if the head of the lab chose…
In decision making process, the worst alternative is the one which have a. More positives with less negatives O b. Less positives with less negatives O . More positives with more negatives d. More negatives with less positives