A traffic study of a busy interstate highway section included sampling the vehicle speeds for 49 randomly selected vehicles. The result was a mean of 72.5 mph with a standard deviation of 8.2 mph. Construct a 95% confidence interval for the mean speed of all vehicles on this section of highway. Show your work.

choice b is correct

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we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

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