Please answer today 1) The results of the exam show a normal distribution with an average score of 75 and a standard deviation of 25. 11264 third grade students took it. Vicky got a score of 80. How many students got a better score than her? (Number to be rounded to the nearest unit)
Answers:
4013
4739
5987
6525

2) A store manager observes, with supporting figures (see table), that his sales evolve according to his selling price. Obviously, the higher the price offered, the more its customers are reluctant to buy. He would like to determine the maximum price allowing him to expect a minimum number of 45 sales. What value would that be?

1$...100
1.5$...80
3.00$...60
5.00$...15
7.00$...4
Answers:
3,00$
3,92$
4,00$
4.75$