1. Slot machines are the favorite game at casinos throughout the U.S. The following sample data...

1. Slot machines are the favorite game at casinos throughout the U.S. The following sample data show the number of women and number of men who selected slot machines as their favorite game. Women Men Sample size 320 250 Favorite game-slots 256 165 Test at a 5% level of significance whether the difference between the proportion of women and proportion of men who say slots is their favorite game is statistically significant. (Please use both confidence interval approach and standard test statistic approach to solve the problem)

2. In a test of the quality of two television commercials, each commercial was shown in a separate test area six times over a one-week period. The following week a telephone survey was conducted to identify individuals who had seen the commercials. Those individuals were asked to state the primary message in the commercials. The following results were recorded. Commercial A Commercial B Number who saw commercial 150 200 Number who recalled message 63 60 Test at a 5% level of significance whether the difference between the recall proportions for the two populations is statistically significant. (Please use both confidence interval approach and standard test statistic approach to solve the problem)

Expert Solution

orchestra answered 11 months ago

Slot machines are the favorite game at casinos throughout the United States (Harrah’s Survey 2002: Profile...

Slot machines are the favorite game at casinos throughout the United States (Harrah’s Survey 2002: Profile of the American Gambler). A local casino wants to estimate the difference in the percent of women and me who prefer the slots with a 95% level of confidence. Random samples of 320 women and 250 men found that 256 women prefer slots and 165 men prefer slots. 1- -Hypothesis test for one population mean (unknown population standard deviation) 2-Confidence interval estimate for one...

The mean age of a random sample of 25 people who were playing the slot machines...

The mean age of a random sample of 25 people who were playing the slot machines is 55.3 years and the standard deviation is 6.8 years. The mean age of a random sample of 35 people who were playing roulette is 49.7 years with a standard deviation of 4.2 years. Find the 99% confidence interval of the true difference in means. Would you reject the null hypothesis that there is no difference in the mean ages of slot machine players...

1. In the game of blackjack as played in casinos in Las Vegas, Atlantic City, Niagara...

1. In the game of blackjack as played in casinos in Las Vegas, Atlantic City, Niagara Falls, as well as many other cities, the dealer has the advantage. Most players do not play very well. As a result, the probability that the average player wins a hand is about 0.29. Find the probability that an average player wins A. twice in 5 hands. Probability = B. 11 or more times in 26 hands. Probability = There are several books that...

Problem 1 Slot machines have three drums with the same number of positions on each drum....

Problem 1 Slot machines have three drums with the same number of positions on each drum. Each position contains a symbol. When you pull the lever on the machine, the drums spin. Assume that each drum is equally likely to stop in any position, and that the positions in which the three drums stop are independent of each other and independent from spin to spin. Suppose a particular slot machine has 9 positions on each drum, and that each position...

A sample of 10 NCAA college basketball game scores provided the following data. &nbsp

A sample of 10 NCAA college basketball game scores provided the following data. Winning Winning Team Points Losing Team Points Margin Arizona 90 Oregon 66 24 Duke 85 Georgetown 66 19 Florida State 75 Wake Forest 70 5 Kansas 78 Colorado 57 21 Kentucky 71 Notre Dame 63 8 Louisville 65 Tennessee ...

1. What is your favorite classic game system and why? What aspects of the hardware and...

1. What is your favorite classic game system and why? What aspects of the hardware and software interface elements in the game system that appeal to you? What are some of your favorite games that you enjoy playing and why? 2. How have interfaces evolved over the course of video game history? Think of a game you play and list and discuss the key features in the game's interface. 3. How can a game interface address accessibility issues? Choose a...

1. Consider the following Cobb-Douglas Production Function for Mauricio’s Machines Inc, a U.S. manufacturer of electronic...

1. Consider the following Cobb-Douglas Production Function for Mauricio’s Machines Inc, a U.S. manufacturer of electronic precision tools: Q = (L * 0.4) + (K * 0.7) a. Explain why a Cobb-Douglas production is indeed a representation of reality? b. Based on the function above, is Mauricio’s Machines’ business experiencing Economies of Scale or Diseconomies of Scale? Please explain your answer. c. If Mauricio’s Machines decided to boost Labor by 10% and Capital by 15%, how much would their productivity...

Use the following data for problems #1 & #2: Belsky Corporation manufactures x-ray machines and has...

Use the following data for problems #1 & #2: Belsky Corporation manufactures x-ray machines and has provided the following data from its activity-based costing system: Activity Cost Pool Total Cost Total Activity Assembly $315,000 30,000 machine-hours Processing orders $49,000 1,400 orders Inspection $77,000 1,100 inspection-hours 1. Calculate an activity rate for each of Belsky’s three activities that it would use in the final stage of allocating costs to its products. (Hint: See Exhibit 7-7 on page 323 of the text...

Consider the following data collected from four independent populations: Sample 1 Sample 2 Sample 3 Sample...

Consider the following data collected from four independent populations: Sample 1 Sample 2 Sample 3 Sample 4 3 14 21 8 8 9 15 3 6 13 16 13 5 14 a. Calculate the total sum of squares (SST). b. Partition the total sum of squares (SST) into its two components. c. Using a= 0.001, what conclusions can be made about the population means?

1. The following set of data is from a sample of n = 8 171...

1. The following set of data is from a sample of n = 8 171 169 158 164 158 135 150 141 a) Find the mean, median, and mode. b) Calculate the variance, standard deviation, range, inter-quartile range, and coefficient of variation. c) Describe the shape of the data. d) List the five-number summary and build a boxplot.

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