4. An online shop sells a computer game at an average rate of 7 games per week. a. Find the probability that the shop sells more than 10 games in a 7 day period b. Once every 7 days, the shop has...

Extracted text: 4. An online shop sells a computer game at an average rate of 7 games per week. a. Find the probability that the shop sells more than 10 games in a 7 day period b. Once every 7 days, the shop has games delivered before it opens. Find the least number of games the shop should have in stock immediately after a delivery so that the probability of running out of the game before the next delivery is less than 0.05.