You have a bag filled with cones. there is one yellow, one green, one purple, and one grey cone in the bag. you pull out one cone, without putting it back, you pull out another cone. you cannot look in the bag. what is the probability of you pulling a purple cone the first time, and yellow cone on your second pull.
a. 1/4
b.1/12
c.1/16
d.1/9

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?