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Mathematics 11 Online
OpenStudy (anonymous):

Medal In the Heart and Stroke Lottery, which is a charitable lottery run by the Heart and Stroke Foundation to raise money for research into heart disease and stroke. The lottery sells 250,000 tickets, claiming the odds of winning are approximately 1 in 3, or a probability of approximately 0.333. Upon further investigation, however, it is discovered that there are only 72,180 prizes available. What is the actual probability of winning a prize, expressed as a decimal rounded to three decimal places?

OpenStudy (anonymous):

Furthermore, there are only 210 big prizes, i.e. prizes that are worth more than the price of the ticket (the other prizes are either of an equivalent or lesser value to the price of the ticket, so they are considered not worthwhile). What is the actual probability of winning a big prize, expressed as a decimal rounded to 4 decimal places?

OpenStudy (perl):

probability of an event = (# of favorable outcomes) / (# total outcomes)

OpenStudy (anonymous):

how would you figure out the # of favorable outcomes

OpenStudy (perl):

that is given in the directions . the number of prizes is the favorable

OpenStudy (anonymous):

210

OpenStudy (perl):

that is the second question. it looks like there are two parts to the question

OpenStudy (perl):

the first question is asking the probability of winning any prize

OpenStudy (anonymous):

ya 2 parts

OpenStudy (perl):

there are only 72,180 prizes available and there are 250,000 tickets sold In a lottery two people can't win the same prize. . What is the actual probability of winning a prize, expressed as a decimal rounded to three decimal places?

OpenStudy (perl):

now use the # favorable / # total , here # favorable are the number of prizes

OpenStudy (anonymous):

0.346

OpenStudy (anonymous):

am i right?

OpenStudy (perl):

can you show me your math

OpenStudy (perl):

for part a) I did 72180 / 250000

OpenStudy (anonymous):

2.887

OpenStudy (anonymous):

can anyone help me

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