Math  Data please help!
posted by Sally .
1) A lotery has 1,000,000 tickets and draws 100 tickets to award prizes. How many tickets would you expect to have to purchase before you would win a prize?
2) Lesley claims she can roll triples with three dice in fewer than 20 rolls.
a)what is the expected number of rolls that it would take to roll the first set of triples?
b)what is the probability that she will roll the triples in fewer than five rolls?
Thanks for your help!
Respond to this Question
Similar Questions

Data Management, Math
10 of your friends (including you..so 10 altogether) are going to have a draw between all of you. Each person gives $10 (for a total of $100). There will be five, $20 draws. One per week for 5 weeks. For the first draw, every person … 
math
Alottery has 100 tickerts which are placed in a barrel . Three tickets are drawn at random from the barrel to decide 3 prizes . If john has 3 tickets in the lottery , determine his probability of winning : A.first prize. B.first and … 
stats math
Suppose you are selling raffle tickets for $3.00 each. You have the following prizes.1 grand prize of $150 1 prize of $75 1 prize of $50 1 prize of $25 5 prizes of $10 each A total of 500 raffle tickets are sold. What is the expected … 
Math
Three out of every 45 tickets sold in a food bank raffle will win a prize. if Eli and his friends bought 15 tickets, which proportion can be used to predict w, the number of prizes they would expect to win? 
College Math
Volunteers working to raise funds for a new community library sold 1000 raffle tickets at $10 each. Tickets are to be randomly drawn and prizes are awarded as follows: one prize of $1,000, twenty prizes of $50 and one hundred prizes … 
Math
Volunteers working to raise funds for a new community library sold 1000 raffle tickets at $10 each. Tickets are to be randomly drawn and prizes are awarded as follows: one prize of $1,000, twenty prizes of $50 and one hundred prizes … 
math
A certain sweepstakes ticket has four categories of prizes with the following probabilities of being won: Prize Probability $100,000 1/500,000 $50,000 1/250,000 $20,000 1/200,000 $10,000 1/100,000 What is the expected value of buying … 
Math
Janelle won 27 tickets at the fair. She traded the tickets in for 9 prizes. each prize was worth the same number of tickets. How many tickets was each prize worth? 
Stats
charity sells $6 raffle tickets first prizes to trace worth $3,000 2nd prize of $600 third prize is $40 and fourth prize $15 they sell 600 tickets what is the expected value 
math
50 people purchase raffle tickets 3 winning tickets are selected at random if the first prize is $1,000, second prize is $500, and third prize is $100 in how many different ways can the prizes be awarded and is this a permutations …