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bogarth:
Group Title
anybody did edx final exam problem 4??
 updated one year ago
 No Medals Yet
Mathematics

bogarth:
Group Title
A group of 30 people consists of 15 children, 10 men, and 5 women. Tom and Jerry are two of the men in the group.
Five people are picked…
 updated one year ago
 13 replies
 1 Medal
Mathematics

bogarth:
Group Title
A group of 30 people consists of 15 children, 10 men, and 5 women. Tom and Jerry are two of the men in the group.
Five people are picked…
 updated one year ago
 No Medals Yet
Mathematics

bogarth:
Group Title
Suppose you are trying to estimate the percent of women in a city. Other things being equal, a simple random sample of 0.1% of the populatio…
 updated one year ago
 2 replies
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Mathematics

bogarth:
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In a city of over 1,000,000 residents, 14% of the residents are senior citizens. In a simple random sample of 1200 residents, there is about…
 updated one year ago
 3 replies
 1 Medal
Mathematics

bogarth:
Group Title
A coin is tossed 2500 times. There is about a 68% chance that the percent of heads is in the range 50% plus or minus
…
 updated one year ago
 2 replies
 3 Medals
Mathematics

bogarth:
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According to genetic theory, plants of a particular species have a 25% chance of being redflowering, independently of other plants. Find th…
 updated one year ago
 2 replies
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Mathematics

bogarth:
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A truefalse test consists of 20 questions, each of which has one correct answer: true, or false. One point is awarded for every correct an…
 updated one year ago
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Mathematics

bogarth:
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A random variable X has the probability distribution
value 1 2 3 4
probability 0.5 …
 updated one year ago
 6 replies
 1 Medal
Mathematics

bogarth:
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400 draws are made at random with replacement from 5 tickets that are marked 2, 1, 0, 1, and 2 respectively. Find the expected value of:
…
 updated one year ago
 1 reply
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Mathematics