A​ men’s clothing store has determined the following probabi…

A​ men’s clothing store has determined the following probability distribution for the number of special size orders placed per month. Based on this​ distribution, what is the standard deviation in the number of special size orders placed per​ month? Number Ordered Probability 0 0.10 5 0.10 10 0.12 15 0.30 20 0.38

An advocacy group is investigating whether gender has an eff…

An advocacy group is investigating whether gender has an effect on job category in large investment firms. She surveyed a sample of firms with the results shown in the following table. What is the probability that a randomly selected​ employee’s job category is executive​ / managerial given that she is​ female? Job Category Male Female Clerical​ / Technical 85 215 Professional Staff 720 480 Executive​ / Managerial 400 100

As an incentive to get new​ customers, the local branch of a…

As an incentive to get new​ customers, the local branch of a bank launched​ “bouncing for​ bucks.” During this week long​ event, any customer opening a new checking account with the bank would have the opportunity to throw a bouncy rubber ball into a large box divided into squares. Each square was labeled with a dollar amount that would be deposited into​ his/her new checking account. The way the box was labeled is shown below. What is the probability that a customer does not get​ $50?