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.Number of orders     0       1       2       3       4       5Probability              0.10   0.14  0.26  0.28  0.15  0.07a. 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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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.

Number of orders     0       1       2       3       4       5
Probability              0.10   0.14  0.26  0.28  0.15  0.07

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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