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Earn +20 ptsQ: What is the probability of having 4 boys in 10 births?
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What is the probability of a girl being chosen if there are 10 boys and 14 girls?
If the choice is unbiased, the change is 14/(10+14). If the chooser prefers choosing boys, the probability is 0.
If a coin is tossed for 30 times what is the probability of having 10 heads?
10 :)
There are 15 girls and 10 boys in a math class what is the probability of not choosing a girl?
2/5
A hat contained 10 boys and 20 girl names What is the chance of picking out a boy's name?
The probability of picking out a boy's name from the hat can be calculated by dividing the number of boy names by the total number of names in the hat. In this case, there are 10 boy names and 30 total names (10 boys + 20 girls). Therefore, the probability of picking out a boy's name is 10/30 or 1/3, which can also be expressed as approximately 0.333 or 33.33%.
If a coin is tossed for 30 times what is the probability of having no heads?
No heads means that every toss lands tails. (0.5)30= 9.3 x 10-10 Note that 109 = 1 trillion, so the probability can be stated this event is likely to occur about 9 times in 10 trillion tosses.
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