# Question

A process produces strings of Christmas tree lights that historically have experienced a defective rate of 4%. A customer has placed an order for 150 strings of lights. Use the normal approximation to the binomial distribution to answer the following:

a. Calculate the mean and standard deviation for this distribution.

b. What is the probability that less than 2 strings in this order will be defective?

c. What is the probability that exactly 7 strings in this order will be defective?

d. What is the probability that 3, 4, or 5 strings in this order will be defective?

e. What is the probability that 8, 9, or 10 strings in this order will be defective?

a. Calculate the mean and standard deviation for this distribution.

b. What is the probability that less than 2 strings in this order will be defective?

c. What is the probability that exactly 7 strings in this order will be defective?

d. What is the probability that 3, 4, or 5 strings in this order will be defective?

e. What is the probability that 8, 9, or 10 strings in this order will be defective?

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