The mean July daily rainfall in Seattle, WA is 25 mm and the standard deviation is 5.5 mm. Assume that this data is normally distributed. How many days in July would you expect the daily rainfall to be less than 14 mm?
Added by Courtney M.
Step 1
First, we need to find the z-score for 14 mm of rainfall. The z-score is calculated as: z = (X - μ) / σ where X is the value we're interested in (14 mm), μ is the mean (25 mm), and σ is the standard deviation (5.5 mm). Show more…
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