ONLY DO QUESTION 6.70 WITH EXCEL FUNCTIONS!!! 6.70 The daily water consumption f

Question

ONLY DO QUESTION 6.70 WITH EXCEL FUNCTIONS!!!

6.70 The daily water consumption for an Ohio community is normally distributed with a mean consumption of 800,000 gallons and a standard deviation of 80,000 gallons. The community water system will experience a noticeable drop in water pressure when the daily water consumption exceeds 984,000 gallons. What is the probability of experiencing such a drop in water pressure? 6.71 Suppose the times required for a cable company to fix cable problems in its customers' homes are uniformly distributed between 10 minutes and 25 minutes. What is the probability that a randomly .:.:.11.la ot looot 1 .....than)

Explanation / Answer

Solution:- Given that mean = 800000 , sd = 80000

  The formula for a z score is z = (x - µ)/

=> P(x > 984,000) = P(Z > (984000 - 800000)/80,000)

= P(Z > 2.3)

= 1 P(Z < 2.3)

= 1 0.9893

= 0.0107

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