About 30% of new single-family homes completed in the United States during 2004 were heated with electricity.
Question:
About 30% of new single-family homes completed in the United States during 2004 were heated with electricity. For a randomly selected sample of 25 new single-family homes completed during that year and the discrete random variable, x = the number of homes in this group heated with electricity:
a. Calculate the mean and standard deviation of the binomial distribution.
b. Using the binomial distribution tables, determine the probability that x will be exactly 8 homes heated with electricity.
c. Using the binomial distribution tables, determine the probability that x will be at least 6 but no more than 9 homes.
d. Repeat part (b), using the normal approximation to the binomial distribution.
e. Repeat part (c), using the normal approximation to the binomial distribution.
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Step by Step Answer:
Given x is binomial with p 030 and n 25 a b Px 8 01651 from the table of individ...View the full answer
