1A) The net weekly sales for a small business follows a normal distribution with a mean...
1A) The net weekly sales for a small business follows a normal distribution with a mean of 536 dollars and standard deviation of 108 dollars.
Calculate each of the following.
In each case, round your response to at least 4 decimal places.
a) What is the probability that in a randomly selected day, the business will do no more than 607 dollars in net sales?
b) What is the probability that in a randomly selected day, the business will do at least 493 dollars in net sales?
c) What is the probability that in a randomly selected day, the business will do between 521 dollars and 591 dollars in net sales?
1B) True or False : For a standard normal random variable, Z, P(Z < -z) < P(Z > z), where z is some constant.
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