Asked by Laurin
The purchases made by customers at a convenience store are normally distributed, with a
mean of $5.50 and a standard deviation of $3.50. What is the probability that a randomly chosen
customer makes a purchase between $2.00 and $9.00?
mean of $5.50 and a standard deviation of $3.50. What is the probability that a randomly chosen
customer makes a purchase between $2.00 and $9.00?
Answers
Answered by
MathMate
Z1=(2-5.5)/3.5=-1
Z2=(9-5.5)/3.5=+1
Look up the normal distribution table to find P(Z1<Z<Z2)
Z2=(9-5.5)/3.5=+1
Look up the normal distribution table to find P(Z1<Z<Z2)
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