assume that 10% of students at a university wear contact lenses. we randomly pick 200 students. what is the standard deviation of the proportion of students in this group who may wear contacts lenses?

0/5 is 0, 2/0 is undefined, and 0/0 is indeterminate.

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answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

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