The weight of cats is normally distributed. Suppose the average weight of an adult cat is 9 pounds with a standard deviation of 1.5 pounds. Approximately what percentage of cats weight between 7.5 and 10.5 pounds? Enter a number between 0 and 100. Do not include the "%" sign.
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Step 1
The z-score is a measure of how many standard deviations an element is from the mean. The formula for calculating the z-score is: Z = (X - μ) / σ Where: X is the value we are looking to convert, μ is the mean, σ is the standard deviation. For 7.5 pounds: Z1 = Show more…
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