Question
In: Statistics and Probability
Vehicle speed on a particular bridge in China can be modeled as normally distributed. (a) If...
Vehicle speed on a particular bridge in China can be modeled as
normally distributed.
(a) If 5% of all vehicles travel less than 39.13 m/h and 10% travel
more than 73.23 m/h, what are the mean and standard deviation of
vehicle speed?
(b) What is the probability that a randomly selected vehicle's
speed is between 50 and 65 m/h?
(c) What is the probability that a randomly selected vehicle's
speed exceeds the speed limit of 70 m/h?
Solutions
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Vehicle speed on a particular bridge in China can be modeled as normally distributed. (a) If...
Vehicle speed on a particular bridge in China can be modeled as
normally distributed.
(a) If 5% of all vehicles travel less than 39.19 m/h and 10%
travel more than 73.21 m/h, what are the mean and standard
deviation of vehicle speed? (Round your answers to three decimal
places.) mean standard deviation
(b) What is the probability that a randomly selected vehicle's
speed is between 50 and 65 m/h? (Round your answer to four decimal
places.)
(c) What is the...
Vehicle speed on a particular bridge in China can be modeled as normally distributed. If 5%...
Vehicle speed on a particular bridge in China can be modeled as
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If 5% of all vehicles travel less than 39.15 m/h and 10% travel
more than 73.27 m/h, what are the mean and standard deviation of
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What is the probability that a randomly selected vehicle's speed
is between 50 and 65 m/h?
What is the probability that a randomly selected vehicle's speed
exceeds the speed limit of 70 m/h?
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