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2. The results of a recent survey indicate that the average new car costs $23,000, with a standard deviation of $3,500. The price of cars is normally distributed.
a. What is a Z score for a car with a price of $ 33,000?

b. What is a Z score for a car with a price of $30,000?

c. At what percentile rank is a car that sold for $30,000?

  • statistics -

    a and b. Z = (score-mean)/SD

    c. Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.

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