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Presented below are a sample of six city mpg ratings for cars. Honda Civic 36 Toyota...

Presented below are a sample of six city mpg ratings for cars. Honda Civic 36 Toyota Camry 24 Ford Taurus 20 Pontiac Grand Prix 20 Jaguar X-Type 18 Lincoln Town Car 17 Find the z-score of Pontiac Grand Prix. [ANSWER TO TWO DECIMAL PLACE PRECISION]

Math   Statistics-And-Probability   
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Answer #1

The sample of 6 city mpg ratings for cars is given.

To find the z score, first need to find the mean and standard deviation for the given sample.

Ratings of the cars are : 36, 24, 20, 20, 18 and 17

The formula to find mean is,

The formula for standard deviation is,

Z score for Pontiac Grand Prix, the mpg rating for this car is 20

The formula to find the z score is,

Therefore, z score of Pontiac Grand Prix is -0.36

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