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2. Assume the readings on thermometers are normally distributed with a mean of 0C and a
standard deviation of 1.00C. A thermometer is randomly selected and tested.
a. Draw a sketch and find the temperature reading corresponding to P81, the 81st percentile.
This is the temperature reading separating the bottom 81% from the top 19%.
b. The temperature for P81 is approximately _____degrees.
Solution
For the 81st percentile z = 0.85 = (x - M)/SD Hence, x = 0.85 C

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2. Assume the readings on thermometers are normally distributed with.pdf

  • 1. 2. Assume the readings on thermometers are normally distributed with a mean of 0C and a standard deviation of 1.00C. A thermometer is randomly selected and tested. a. Draw a sketch and find the temperature reading corresponding to P81, the 81st percentile. This is the temperature reading separating the bottom 81% from the top 19%. b. The temperature for P81 is approximately _____degrees. Solution For the 81st percentile z = 0.85 = (x - M)/SD Hence, x = 0.85 C