The pH measurements of water specimens from various locations along a river basin are normally distributed with mean 8 and standard deviation 0.3. What is the probability that the pH measurement of a randomly selected water specimen is a value between 7.5 and 8.2? 0.9522 0.3003 0.9902 0.6997
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We are given that the pH measurements are normally distributed with a mean (µ) of 8 and a standard deviation (σ) of 0.3. Show more…
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The pH measurements of water specimens from various locations along a given river basin are normally distributed with mean of 8 and standard deviation of 0.30. a. What is the probability that the pH measurement of a randomly selected water specimen is a value between 7.2 and 8.25? b. What is the probability that the pH measurement of a randomly selected water specimen is a value between 7.2 and 7.75? c. What is the probability that the pH measurement of a randomly selected water specimen is a value between 8.25 and 8.58?
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The pH measurements of water specimens from various locations along a given river basin are Normally distributed with mean μ = 8 and standard deviation σ = 0.3. What is the approximate probability that the pH measurement of a randomly selected water specimen is a value between 7.5 and 8.2? What is the 40th percentile of pH measurements of water specimens from this particular green river basin? 2. Heights of adult males are Normally distributed with mean μ = 70 inches and standard deviation σ = 3.4 inches. An adult male is classified as "short" if he is less than 64 inches tall and as "tall" if he is in the top 7% of adult male heights. What proportion of adult males are classified as "short"? At what height is an adult male classified as "tall"?
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