Mathematics, 29.03.2021 21:30 xuzixin2004
The Statistical Abstract of the United States (109th edition) reported that the average cost per day of owning an automobile in the United States is $7.62 with standard deviation of $1.77. This includes the cost of the car, general maintenance, gasoline, and insurance. A random sample of 54 students who own cars found the average cost per day to be $6.78. Is the college student's average daily expense less than the national average
Answers: 3
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