Abetting company wishes to sell 5000 tickets 50 of which will win prizes. i.) a students decided to buy 200 tickets. let x be the number of tickets that win a prize. write the probability distribution of x and give its mean. ii.) using a poisson approximation for the distribution of x find the probability of at least three tickets winning a prize. iii.) calculate the number of tickets that should be bought so as the probability of at least one winning a prize is 90%

If the class was going to get a class pet and 5 picked fish and 7 pick bird and 8 picked rabbits have many students were in the

Sandy is ordering bread rolls for her party, she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?