It has been estimated that only about 40% 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
How many California residents do you expect to need to survey until you find a California resident who does not have adequate earthquake supplies?
Thank you for the opportunity to help you with your question!
is the number of California resident and has geometric distribution with p =probability of not having supplies = 1-0.4 = 0.6
= (0.4)n-10.6 for n =
For example, P(W≥3)
= 1-P(W≤2) = 1-W(1)-W(2) = 1- 0.6-0.4(0.6) = 0.7
which is the probability of at
least 3 California residents until we find a California resident who does not
have adequate earthquake supplies ** P/S: Please remember to give me a review later on once the answer is correct. I would be highly appreciate it. Thank you. **
Oct 2nd, 2015
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