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1) Of all the trees planted by a landscaping firm, 10% survive. What is the probability...

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1) Of all the trees planted by a landscaping firm, 10% survive.What is the probability that 7 or more of the 9 trees they justplanted will survive? (Use a table of binomial probabilities. Giveyour answer correct to four decimal places.)

2)

Find the following probabilities for X = pulse rates ofgroup of people, for which the mean is 78 and the standarddeviation is 4. Assume a normal distribution. (Round all answers tofour decimal places.)

(a) P(X ≤ 75).


(b) P(X ≥ 84).


(c) P(68 ≤ X ≤ 86).


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1 GivenPercentage of trees survived 10 01    See Answer
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