In an effort to persuade customers to reduce their electrici

In an effort to persuade customers to reduce their electricity consumption, special discounts have been offered for low consumption customers. In Florida, the EPA estimates that 70% of the residences have qualified for these discounts.

If, instead, a sample of 20 residences is selected, what is the probability 12 or more will have qualified for the discounts?

p = proportion of residents qualified for discounts = 0.70

Sample size = 20

If X is the no of residences selected for discounts then x is binomial with (20,0.7)

P(X>=12) = 0.8867

In an effort to persuade customers to reduce their electricity consumption, special discounts have been offered for low consumption customers. In Florida, the E

In an effort to persuade customers to reduce their electrici

Solution

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