In analyzing hits by bombs in a past war, a city was subdivided into 550 regions, each with an area of 0.5-km². A total

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In analyzing hits by bombs in a past war, a city was subdividedinto 550 regions, each with an area of 0.5-km². A total of 473bombs hit the combined area of 550 regions. The Poissondistribution applies because we are dealing with the occurrences ofan event (bomb hits) over some interval (a region with area of0.5-km².Find the mean number of hits per region: mean = Find the standard deviation of hits per region: standard deviation = If a region is randomly selected, find the probability that it washit exactly twice. (Report answer accurate to 4 decimal places.) P(X=2)=P(X=2)= Based on the probability found above, how many of the 550 regionsare expected to be hit exactly twice? (Round answer to a whole number.) ans = If a region is randomly selected, find the probability that it washit at most twice. (Report answer accurate to 4 decimal places.) P(X≤2)=P(X≤2)=
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