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(a) less than S70, (b) between $85 and $110, and (c) more than $120

(a) less than S70, (b) between $85 and $110, and (c) more than $120

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 40E: Pygmy Height The average height of a member of a certain tribe of pygmies is 3.2ft, with a standard...
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The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $13. Find the probability that a randomly selected utility bill is (a) less than $7o, (b) betwoen $85 and $110, and (c) more than $120. (a) The probability that a randomly selected utity bill is less than $70 is (Round to four decimal places as neoded.)
Transcribed Image Text:The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $13. Find the probability that a randomly selected utility bill is (a) less than $7o, (b) betwoen $85 and $110, and (c) more than $120. (a) The probability that a randomly selected utity bill is less than $70 is (Round to four decimal places as neoded.)
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