In Ohio's Pick 4 game, you pay $1 to select a sequence of four digits, such as 7709. If you buy only one ticket and win, your prize is $5,000 and your net gain is $4,999.โ What is the expected value?
-50ยข
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heart
Other team wins 5 points!
Oops!
star
Double points!
Okay!
gift
Win 15 points!
Okay!
banana
Go to last place!
Oops!
15
In a population, about 40% of people have brown eyes, 35% have blue, 12% have green, 7% have gray, and 6% have hazel. If two are selected, find the probability that at least one has brown eyes.
0.64
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boom
Lose 50 points!
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shark
Other team loses 25 points!
Okay!
gift
Win 25 points!
Okay!
lifesaver
Give 20 points!
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15
In Ohio's Pick 4 game, you pay $1 to select a sequence of four digits, such as 7709. If you buy only one ticket and win, your prize is $5,000 and your net gain is $4,999.โ If you buy 1 ticket, what is the probability of winning?
1 / 10,000 or 0.0001
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seesaw
Swap points!
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shark
Other team loses 15 points!
Okay!
rocket
Go to first place!
Okay!
banana
Go to last place!
Oops!
15
What is the probability that the selected person refused to answer?
156/1205 or 0.129
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15
If two people are selected, what is the probability that at least one of them responded?
0.983
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15
What is the probability that someone selected responded and is over 60?
202/1205 or 0.168
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15
The overhead reaches of adult females are normally distributed and have the following parameters: ยต = 205.5cm, ? = 8.6cm. If 1 adult female is randomly selected, find the probability that their mean overhead reach is greater than 218.4cm
0.0668
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15
Find the probability that someone uses drugs given that they had a negative test result.
6/866 or 0.0069
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15
The overhead reaches of adult females are normally distributed and have the following parameters: ยต = 205.5cm, ? = 8.6cm. If 49 adult females are randomly selected, find the probability that their mean overhead reach is less than 207.0cm
0.8888 (tech: 0.8889)
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15
Find the area
area = 0.9492
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15
If two people are selected, what is the probability that both responded and are between 22-29?
0.035
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15
If boys and girls are equally likely, groups of 400 births have a mean of 200 girls and a standard deviation of 10 girls. Is 185 girls in 400 births an unusually low number?
No. The value is within two standard deviations of the mean.