A sample of 100 customers of montana gas and electric

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A sample of 100 customers of Montana Gas and Electric resulted in the following frequency distribution of monthly charges.

Amount ($) Number

0-49 ...........................13

50-99 .........................22

100-149 ......................34

150-199 ......................26

200-249 ...................... 5

a. Let A be the event that monthly charges are $150 or more. Find P(A).

b. Let B be the event that monthly charges are less than $150. Find P(B).

Reference no: EM13576729

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