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Please show your work Residents of a small town have savings which are normally distributed with...

Please show your work

Residents of a small town have savings which are normally distributed with a mean of $3000 and a standard deviation of $500.

(i) What percentage of townspeople have savings greater than $3200?

(ii) Two townspeople are chosen at random. What is the probability that both of them have savings between $2300 and $3300?

(iii) The percentage of townspeople with savings less than d dollars is 74.22%. Find the value of d.

Math   Statistics-And-Probability   
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