Problem 11.1TI: A factory manager needs to understand how many products are defective versus how many are produced.... Problem 11.2TI: Teachers want to know which night each week their students are doing most of their homework. Most... Problem 11.3TI: The expected percentage of the number of pets students have in their homes is distributed (this is... Problem 11.4TI: Students in a social studies class hypothesize that the literacy rates across the world for every... Problem 11.5TI: A sample of 300 students is taken. Of the students surveyed, 50 were music students, while 250 were... Problem 11.6TI: The Bureau of Labor Statistics gathers data about employment in the United States. A sample is taken... Problem 11.7TI: Refer back to the information in Try It. How many service providing jobs are there expected to be in... Problem 11.8TI: Do families and singles have the same distribution of cars? Use a level of significance of 0.05.... Problem 11.9TI: Ivy League schools receive many applications, but only some can be accepted. At the schools listed... Problem 11.10TI: A SCUBA instructor wants to record the collective depths each of his students dives during their... Problem 11.11TI: The FCC conducts broadband speed tests to measure how much data per second passes between a... Problem 1P: If the number of degrees of freedom for a chi-square distribution is 25, what is the population mean... Problem 2P: If df > 90, the distribution is _____________. If df = 15, the distribution is ________________. Problem 3P: When does the chi-square curve approximate a normal distribution? Problem 4P: Where is µ located on a chi-square curve? Problem 5P: Is it more likely the df is 90, 20, or two in the graph? Figure 11.13 Problem 6P: Determine the appropriate test to be used in the next three exercises. An archeologist is... Problem 7P: Determine the appropriate test to be used in the next three exercises. An economist is deriving a... Problem 8P: Determine the appropriate test to be used in the next three exercises. A personal trainer is putting... Problem 9P: Use the following information to answer the next five exercises: A teacher predicts that the... Problem 10P: Use the following information to answer the next five exercises: A teacher predicts that the... Problem 11P: x2test statistic = ______. Use the following information to answer the next five exercises: A... Problem 12P: Use the following information to answer the next five exercises: A teacher predicts that the... Problem 13P: Use the following information to answer the next five exercises: A teacher predicts that the... Problem 14P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 15P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 16P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 17P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 18P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 19P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 20P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 21P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 22P: Use the following information to answer the next nine exercises: The following data are real. The... Problem 23P: Test of Independence Determine the appropriate test to be used in the next three exercises. A... Problem 24P: Test of Independence Determine the appropriate test to be used in the next three exercises. The... Problem 25P: Test of Independence Determine the appropriate test to be used in the next three exercises. A... Problem 26P: Use the following information to answer the next seven exercises: Transit Railroads is interested in... Problem 27P: Use the following information to answer the next seven exercises: Transit Railroads is interested in... Problem 28P: Use the following information to answer the next seven exercises: Transit Railroads is interested in... Problem 29P: Use the following information to answer the next seven exercises: Transit Railroads is interested in... Problem 30P: Use the following information to answer the next seven exercises: Transit Railroads is interested in... Problem 31P: Use the following information to answer the next seven exercises: Transit Railroads is interested in... Problem 32P: Use the following information to answer the next seven exercises: Transit Railroads is interested in... Problem 33P: Use the following information to answer the next eight exercises: An article in the New England... Problem 34P: Use the following information to answer the next eight exercises: An article in the New England... Problem 35P: Use the following information to answer the next eight exercises: An article in the New England... Problem 36P: Use the following information to answer the next eight exercises: An article in the New England... Problem 37P: Use the following information to answer the next eight exercises: An article in the New England... Problem 38P: Use the following information to answer the next eight exercises: An article in the New England... Problem 39P: Use the following information to answer the next eight exercises: An article in the New England... Problem 40P: Use the following information to answer the next eight exercises: An article in the New England... Problem 41P: a = 0.05 a. Decision: ___________________ b. Reason for the decision: ___________________ c.... Problem 42P: a = 0.01 a. Decision: ___________________ b. Reason for the decision: ___________________ c.... Problem 43P: A math teacher wants to see if two of her classes have the same distribution of test scores. What... Problem 44P: What are the null and alternative hypotheses for Exercise 11.43? Problem 45P: A market researcher wants to see if two different stores have the same distribution of sales... Problem 46P: A meteorologist wants to know if East and West Australia have the same distribution of storms. What... Problem 47P: What condition must be met to use the test for homogeneity? Problem 48P: Use the following information to answer the next five exercises: Do private practice doctors and... Problem 49P: Use the following information to answer the next five exercises: Do private practice doctors and... Problem 50P: Use the following information to answer the next five exercises: Do private practice doctors and... Problem 51P: Use the following information to answer the next five exercises: Do private practice doctors and... Problem 52P: Use the following information to answer the next five exercises: Do private practice doctors and... Problem 53P: Which test do you use to decide whether an observed distribution is the same as an expected... Problem 54P: What is the null hypothesis for the type of test from Exercise 11.53? Problem 55P: Which test would you use to decide whether two factors have a relationship? Problem 56P: Which test would you use to decide if two populations have the same distribution? Problem 57P: How are tests of independence similar to tests for homogeneity? Problem 58P: How are tests of independence different from tests for homogeneity? Problem 59P: Test of a Single Variance Use the following information to answer the next three exercises: An... Problem 60P: Test of a Single Variance Use the following information to answer the next three exercises: An... Problem 61P: Test of a Single Variance Use the following information to answer the next three exercises: An... Problem 62P: Use the following information to answer the next three exercises: The standard deviation of heights... Problem 63P: Use the following information to answer the next three exercises: The standard deviation of heights... Problem 64P: Use the following information to answer the next three exercises: The standard deviation of heights... Problem 65P: Use the following information to answer the next four exercises: The average waiting time in a... Problem 66P: Use the following information to answer the next four exercises: The average waiting time in a... Problem 67P: Use the following information to answer the next four exercises: The average waiting time in a... Problem 68P: Use the following information to answer the next four exercises: The average waiting time in a... Problem 69H: As the number of degrees of freedom increases, the graph of the chi-square distribution looks more... Problem 70H: The standard deviation of the chi-square distribution is twice the mean. Problem 71H: The mean and the median of the chi-square distribution are the same if df = 24. Problem 72H: A six-sided die is rolled 120 times. Fill in the expected frequency column. Then, conduct a... Problem 73H: The marital status distribution of the U.S. male population, ages 15 and older, is as shown in Table... Problem 74H: Use the following information to answer the next two exercises: The columns in Table 11.37 contain... Problem 75H: Use the following information to answer the next two exercises: The columns in Table 11.37 contain... Problem 76H: The City of South Lake Tahoe, CA, has an Asian population of 1,419 people, out of a total population... Problem 77H: Use the following information to answer the next two exercises: UCLA conducted a survey of more than... Problem 78H: Use the following information to answer the next two exercises: UCLA conducted a survey of more than... Problem 79H: In a goodness-of-fit test, the expected values are the values we would expect if the null hypothesis... Problem 80H: In general, if the observed values and expected values of a goodness-of-fit test are not close... Problem 81H: Use a goodness-of-fit test to determine if high school principals believe that students are absent... Problem 82H: The test to use to determine if a six-sided die is fair is a goodness-of-fit test. Problem 83H: In a goodness-of fit test, if the p-value is 0.0113, in general, do not reject the null hypothesis. Problem 84H: A sample of 212 commercial businesses was surveyed for recycling one commodity; a commodity here... Problem 85H: Table 11.42 contains information from a survey among 499 participants classified according to their... Problem 86H: A recent debate about where in the United States skiers believe the skiing is best prompted the... Problem 87H: Car manufacturers are interested in whether there is a relationship between the size of car an... Problem 88H: College students may be interested in whether or not their majors have any effect on starting... Problem 89H: Some travel agents claim that honeymoon hot spots vary according to age of the bride. Suppose that... Problem 90H: A manager of a sports club keeps information concerning the main sport in which members participate... Problem 91H: A major food manufacturer is concerned that the sales for its skinny french fries have been... Problem 92H: According to Dan Lenard, an independent insurance agent in the Buffalo, N.Y. area, the following is... Problem 93H: Suppose that 600 thirty-year-olds were surveyed to determine whether or not there is a relationship... Problem 94H: The number of degrees of freedom for a test of independence is equal to the sample size minus one. Problem 95H: The test for independence uses tables of observed and expected data values Problem 96H: The test to use when determining if the college or university a student chooses to attend is related... Problem 97H: In a test of independence, the expected number is equal to the row total multiplied by the column... Problem 98H: An ice cream maker performs a nationwide survey about favorite flavors of ice cream in different... Problem 99H: Table 11.52 provides a recent survey of the youngest online entrepreneurs whose net worth is... Problem 100H: A 2013 poll in California surveyed people about taxing sugar-sweetened beverages. The results are... Problem 101H: A psychologist is interested in testing whether there is a difference in the distribution of... Problem 102H: Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and... Problem 103H: A fisherman is interested in whether the distribution of fish caught in Green Valley Lake is the... Problem 104H: In 2007, the United States had 1.5 million homeschooled students, according to the U.S. National... Problem 105H: When looking at energy consumption, we are often interested in detecting trends over time and how... Problem 106H: The Insurance Institute for Highway Safety collects safety information about all types of cars every... Problem 107H: Is there a difference between the distribution of community college statistics students and the... Problem 108H: If df = 2, the chi-square distribution has a shape that reminds us of the exponential. Problem 109H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 110H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 111H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 112H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 113H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 114H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 115H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 116H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 117H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 118H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 119H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 120H: Test of a Single Variance Use the following information to answer the next twelve exercises: Suppose... Problem 121H: A plant manager is concerned her equipment may need recalibrating. It seems that the actual weight... Problem 122H: Consumers may be interested in whether the cost of a particular calculator varies from store to... Problem 123H: Isabella, an accomplished Bay to Breakers runner, claims that the standard deviation for her time to... Problem 124H: Airline companies are interested in the consistency of the number of babies on each flight, so that... Problem 125H: The number of births per woman in China is 1.6 down from 5.91 in 1966. This fertility rate has been... Problem 126H: According to an avid aquarist, the average number of fish in a 20-gallon tank is 10, with a standard... Problem 127H: The manager of "Frenchies" is concerned that patrons are not consistently receiving the same amount... Problem 128H: You want to buy a specific computer. A sales representative of the manufacturer claims that retail... Problem 129H: A company packages apples by weight. One of the weight grades is Class A apples. Class A apples have... Problem 130BITH: a. Explain why a goodness-of-fit test and a test of independence are generally right-tailed tests.... format_list_bulleted
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