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3. sales at a supermarket can be modelled using a normal...

# Question: sales at a supermarket can be modelled using a normal...

###### Question details

Sales at a supermarket can be modelled using a normal distribution with a mean of $300,000 and a standard deviation of$10,000. Find the probability that:

(a) Sales exceed $320,000 2.5% (b) Sales are less than$290,000

17.5%

(c) Sales are between $305,000 and$307,000

P=