# Question

A company specializes in installing and servicing central-heating furnaces. In the prewinter period, service calls may result in an order for a new furnace. The following table shows estimated probabilities for the numbers of new furnace orders generated in this way in the last two weeks of September.

a. Graph the probability distribution function.

b. Calculate and graph the cumulative probability distribution.

c. Find the probability that at least 3 orders will be generated in this period.

d. Find the mean of the number of orders for new furnaces in this 2-week period.

e. Find the standard deviation of the number of orders for new furnaces in this 2-week period

.

a. Graph the probability distribution function.

b. Calculate and graph the cumulative probability distribution.

c. Find the probability that at least 3 orders will be generated in this period.

d. Find the mean of the number of orders for new furnaces in this 2-week period.

e. Find the standard deviation of the number of orders for new furnaces in this 2-week period

.

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