The time needed to find a parking space is normally distributed with a mean of 23 minutes and a standard deviation of 4.69 minutes. 90% of the time, it takes more than how many minutes to find a parking space?
Added by Stephanie G.
Step 1
To find the z-score, we can use the standard normal distribution table or a calculator. Since we want to find the time it takes more than a certain number of minutes, we need to find the z-score corresponding to the 90th percentile. Using a standard normal Show more…
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