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Question: 1. Refer back to the information in Try It. How many service providing jobs are there expected to be in 2020? How many nonagriculture wage and salary jobs are there expected to be in 2020?

2. Do families and singles have the same distribution of cars? Use a level of significance of 0.05. Suppose that 100 randomly selected families and 200 randomly selected singles were asked what type of car they drove: sport, sedan, hatchback, truck, van/SUV. The results are shown in Table. Do families and singles have the same distribution of cars? Test at a level of significance of 0.05.

                Sport        Sedan         Hatchback         Truck         Van/SUV

Family          5             15                  35                 17               28

Single         45             65                  37                 46               7

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