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7) A company wants to find out what kinds of transportation its employees use to get to work. It conducts a survey of 537


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7) A company wants to find out what kinds of transportation its employees use to get to work. It conducts a survey of 537 employees, and 243 say they ride the bus. Construct a 90% confidence interval for the proportion of employees who ride the bus to and from work. Make sure you show conditions are met before you proceed. BA 8) A random sample of 384 people in a mid-sized city (Dalto City) revealed 112 individuals who worked at more than one job. A second random sample of 432 workers form another mid-sized city (East Dettweiler) found 91 people work at more than one job. Is the difference in proportions statically significant, in particular do people in Dalto City work more jobs than the people in East Dettweiler? Use state, plan, do, conclude format.

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