Solution-Find the probability of bills

Find the probability of bills

Reference no: EM13916937

The Federal Reserve reports that the mean lifespan of a five dollar bill is 4.9 years. Let's suppose that the standard deviation is 1.8 years and that the distribution of lifespans is normal

Find:

(a) the probability that a $5 bill will last less than 6 years.

(b) the probability that a $5 bill will last between 3 and 5 years.

(d) the probability that a random sample of 35 bills has a mean length of more than 5.5 years.

Reference no: EM13916937

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Find the probability of bills

Reference no: EM13916937

Reference no: EM13916937

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