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## Homework Statement

assume the dispersion of 3000 bombs launched from an aircraft showed a normally distributed miss distance profile with standard deviation of 10 meters. if 80 bobmbs are dropped on a target with no systematic errors at launch , what is probability that 50 bombs are within 10 meters of target.

Mean was not given but i think it should be assumed as zero

## The Attempt at a Solution

mean = 0

std deviation = 10

x = 10

z1 = ( x - mean ) / std deviation

calculated p( z < z1) from normal distribution tables

then how to apply it for 50 bombs out of 80