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It has been estimated that only about 30% of California residents have adequate earthquake supplies.
106It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose we are interested in the number of California residents we must survey until we find a resident who does not have adequate earthquake supplies.
a) In words, define the random variable X.
b) List the values that X may take on.
c) Give the distribution of X. X ~ _____(_____,_____)
d) What is the probability that we must survey just one or two residents until we find a California resident who does not have adequate earthquake supplies?
e) What is the probability that we must survey at least three California residents until we find a California resident who does not have adequate earthquake supplies?
f) How many California residents do you expect to need to survey until you find a California resident who does not have adequate earthquake supplies?
g) How many California residents do you expect to need to survey until you find a California resident who does have adequate earthquake supplies?
