What is 1,037 / 14 to ,(a) Three decimal places, ,(b) One decimal place, ,(c) Two significant figures, ,(d) One significant figure?
Suppose the mean clear height of all U.S. Class A warehouses is unknown but the standard deviation is known to be 4 feet.What is the value of the mean clear height if 29% of U.S. Class A warehouses have a clear height less than 20 feet?
Suppose that you toss a pair of dice and write down the value of the faces from each die.,a. What is the population distribution for one die?,b. Determine the sampling distribution of the sample means obtained by tossing two dice.
Western University has only one women’s softball scholarship remaining for the coming year. The final two players that Western is considering are Allison Fealey and Emily Janson. The coaching staff has concluded that the speed and defensive skills are virtually identical for the two players, and that the final decision will be based on which player has the best batting average. Crosstabulations of each player’s batting performance in their junior and senior years of high school are as follows:,A player’s batting average is computed by dividing the number of hits a player has by the total number of at-bats. Batting averages are represented as a decimal number with three places after the decimal.,a. Calculate the batting average for each player in her junior year. Then calculate the batting average of each player in her senior year. Using this analysis, which player should be awarded the scholarship? Explain.,b. Combine or aggregate the data for the junior and senior years into one crosstabulation as follows:,Calculate each player’s batting average for the combined two years. Using this analysis, which player should be awarded the scholarship? Explain.,c. Are the recommendations you made in parts (a) and (b) consistent? Explain any apparentinconsistencies.
Use the sample of ages from Exercise 3 to construct a 95% confidence interval estimate of the mean age of the population of ICU patients. Do the confidence interval limits contain the value of 65.0 years that was found from a sample of 9269 ICU patients?
We recorded the home and away attendance for the NHL for the 2013 season.,a. Analyze the relationship between the number of wins and home attendance.,b. Perform a similar analysis for away attendance.,c. Briefly summarize what you have learned.
Use the runs test to determine whether the sample is random. Let alpha be.05.
We recorded the home and away attendance for the NBA for the 2012–2013 seasons.,a. Analyze the relationship between the number of wins and home attendance.,b. Perform a similar analysis for away attendance.,c. What have you learned about the relationship between how well a basketball team performs and its home and away attendance?
Use the numerical methods of descriptive statistics presented in this chapter to learn how these variables contribute to the success of a motion picture. Include the following in your report:,1. Descriptive statistics for each of the four variables along with a discussion of what the descriptive statistics tell us about the motion picture industry.,2. What motion pictures, if any, should be considered high-performance outliers? Explain.,3. Descriptive statistics showing the relationship between total gross sales and each of the other variables. Discuss.,The motion picture industry is a competitive business. More than 50 studios produce several hundred new motion pictures each year, and the financial success of the motion pictures varies considerably. The opening weekend gross sales, the total gross sales, the number of theaters the movie was shown in, and the number of weeks the motion picture was in release are common variables used to measure the success of a motion picture. Data on the top 100 grossing motion pictures released in 2011 (Box Office Mojo website, March 17, 2012) are contained in a file named 2011Movies. Table 3.10 shows the data for the first 10 motion pictures in this file. Note that some movies, such as War Horse, were released late in 2011 and continued to run in2012.