Tuesday

October 21, 2014

October 21, 2014

Posted by **Katie** on Tuesday, September 27, 2011 at 10:04pm.

4280 tickets were sold in all, what is the probability that the grand prize winner is:

a. Mr. or Mrs. Smith? b. one of the 5 Smiths? c. none of the Smiths?

- math -
**Corey**, Tuesday, September 27, 2011 at 11:29pma) The probability for one or the other is 10/4280 (1/428). For one of the two, add each of their probabilities (1/428)+(1/428) gives an answer of 1/214.

b) The probability for any one child is 4/4280 (1/1070). Adding together the three children's probability (1/1070)+(1/1070)+(1/1070) gives an answer of 3/1070.

c)Since the total tickets for the Smiths are 32 tickets, 4280-32 (4248) tickets are possessed by others. 4248/4280 (531/535) is the probability another will win.

- math -
**michelle**, Tuesday, September 27, 2011 at 11:34pma. 10/4280

0.0023

b. (10+12) = total tickets

22/4280 = 0.051

c. (4280-22) divided by 4280

0.9949

**Answer this Question**

**Related Questions**

math - tickets for a football match are sold at $30 for adults and $15 for ...

Statistics - A school is running a raffle. There are 100 tickets, of which 3 are...

statistics - Suppose that neighborhood soccer players are selling raffle tickets...

Maths - Probability - Tickets numbered 1 to 1000 were sold in a raffle for which...

5th grade - out of 100 tickets sold at a school raffle jack bought 5 mat bought ...

math - 30% of the tickets sold by a movie theater for the Friday night show were...

Math - Three out of every 45 tickets sold in a food bank raffle will win a prize...

Math - Andrea sells tickets at the Showtime Cinema. On Thursday night, Back to ...

Probability - A school is running a raffle for two prizes. 59 tickets were sold ...

Math - A community group bought 30 tickets to an amusement park at a total cost ...