A (blindfolded) marksman finds that on the average he hits the target 4 times out of 5. If he fires 4 shots, what
is the probability of :

(a) more than 2 hits?

(b) at least 3 misses?

Guys i really need or i have to stay late up night

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out

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?