Question 179831: Please show me how to do these problems and please explains.
1.) A farmer has four sheepdogs and three beagles. If he randomly chooses a dog to accompany him on a walk, what is the probability of him taking a walk with sheepdog?
2.) Gordon spins a spinner with equal-sized sections numbered 1-6. In one spin, what is the likelihood that the spinner will stop on a 1 or a 5?
3.) When two number cubes labeled 1-6 are rolled, what is the probability that the result will be two 4's ?
4.) Joanne is guessing which day in November is Bess's birthday. Joanne know that Bess's birthday does not fall on an odd-numbered day. What is the probability that Joanne will guess the correct day on her first try?
Thank you for your help.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Please show me how to do these problems and please explains.
1.) A farmer has four sheepdogs and three beagles. If he randomly chooses a dog to accompany him on a walk, what is the probability of him taking a walk with sheepdog?
Probability of event E = (# of ways E can happen)/(# of possible outcomes)
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P(sheepdog) = 4/7
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2.) Gordon spins a spinner with equal-sized sections numbered 1-6. In one spin, what is the likelihood that the spinner will stop on a 1 or a 5?
P(1 or 5) = 2/6 = 1/3
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3.) When two number cubes labeled 1-6 are rolled, what is the probability that the result will be two 4's ?
P(two 4's) = 1/36
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4.) Joanne is guessing which day in November is Bess's birthday. Joanne know that Bess's birthday does not fall on an odd-numbered day. What is the probability that Joanne will guess the correct day on her first try?
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November has 30 days (15 even and 15 odd)
P(Joanne chooses the correct day) = 1/15
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Cheers,
Stan H.
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