Suppose that you are working for a chain restaurant and wish to design a promotion to disabuse the public of notions that the service is slow. You decide to institute a policy that any customer that waits too long will receive their meal for free. You know that the wait times for customers are normally distributed with a mean of 20 minutes and a standard deviation of 3.8 minutes. Use statistics to decide the maximum wait time you would advertise to customers so that you only give away free meals to at most 0.5% of the customers. a. Determine an estimate of an advertised maximum wait time so that 0.5% of the customers would receive a free meal. Round to one decimal place._____________ minutes b. Include a graph illustrating the solution. For the graph do NOT make an empirical rule graph, just include the mean and the mark off the area that corresponds to the 0.5% who would receive the refund. There is a Normal Distribution Graph generator linked in the resources area.
Suppose that you are working for a chain restaurant and wish to design a promotion to disabuse the public of notions that the service is slow. You decide to institute a policy that any customer that waits too long will receive their meal for free. You know that the wait times for customers are
a. Determine an estimate of an advertised maximum wait time so that 0.5% of the customers would receive a free meal. Round to one decimal place._____________ minutes
b. Include a graph illustrating the solution. For the graph do NOT make an
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