A recent study measured owners' satisfaction with the design, content, layout, and performance of their new vehicles. The table below contains the satisfaction rating for different makes of cars. Complete parts a and b below. 841 839 852 801 824 801 746 788 718 842 835 717 851 715 785 779 840 751 761 747 795 747 848 739 729 852 818 796 762 747 a. Use technology to construct a histogram that starts at 710 and has class widths of 20 for the ratings. Choose the correct graph below. O A. Frequency 6- 0- 710 790 870 Satisfaction Rating O O B. Frequency 12- 6- 0- 710 790 870 Satisfaction Rating Q O C. Frequency 6- 0+ 710 790 870 Satisfaction Rating Q Q O D. Frequency 6- 0- 710 790 870 Satisfaction Rating Q

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The following table shows some data from a study on substance use among 10th graders in the United States and Europe. Smoked Cigarettes Cigarette-Free Totals U.S. 14,000 Europe 96,000 Total 71,210 110,000

A 2009 Pew Research Center survey asked a sample of 1,504 adults living in the United States for their opinions on recent technological advancements, such as online shopping, cell phones, and social networking. Respondents categorized each advancement as a change for the worse, hasn't made much difference, a change for the better, or don't know. A summary of respondents' opinions on the Internet follows: Response Change for the worse Hasn't made much difference Change for the better. Don't know Percent of Respondents 16 11 65 8 Make a bar graph of the relative frequency distribution of the responses.

You may need to use the appropriate appendix table or technology to answer this question. DATAfile: ResidentialWater On its municipal website, the city of Tulsa states that the rate it charges per 5 CCF of residential water is $21.62. How do the residential water rates of other U.S. public utilities compare to Tulsa's rate? The data shown below ($) contains the rate per 5 CCF of residential water for 42 randomly selected U.S. cities. 10.48 9.18 11.8 6.5 12.42 14.53 15.56 10.12 14.5 16.18 17.6 19.18 17.98 12.85 16.8 17.35 15.64 14.8 18.91 17.99 14.9 18.42 16.05 26.85 22.32 22.76 20.98 23.45 19.05 23.7 19.26 23.75 27.8 27.05 27.14 26.99 24.68 37.86 26.51 39.01 29.46 41.65 (a) Formulate hypotheses that can be used to determine whether the population mean rate per 5 CCF of residential water charged by U.S. public utilities differs from the $21.62 rate charged by Tulsa. (Enter != for ≠ as needed.) H0:         Ha:         (b) What is the test statistic for your…