A gray-scale digital camera with 1,000,000 pixels takes a picture (the picture is made of 1,000,000 parts and each part has a certain amount of gray). A histogram is made where the data is the amount of gray in each of these parts. The histogram looks bell-shaped with a mean of 125 gray levels and a standard deviation of 15.
How many pixels are brighter than 163 gray levels?
5000
10,000
160,000
50,000

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@dan815 help please

oe can someone help

125 +k *15= 163
k is telling you the number of standard deviations above you need to go to get 163

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