On any given day, 34 percent of sales at Ruby’s jewelry store are from necklaces, while 28 percent of sales at Nugget Jewels are from necklaces. Suppose Ruby’s has 50 customers and Nugget Jewels has 60 customers on a randomly selected day. Let cap r is equal to the proportion of sales that are from necklaces at Ruby’s and cap n is equal to the proportion of sales that are from necklaces at Nugget Jewels. What is the probability that the proportion of sales from necklaces at Ruby’s will be less than the proportion of sales from necklaces at Nugget Jewels? Use the z -table.