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How would you calculate the probability you'll have experienced a rainy day at some point in the last seven days if there's been a 10 percent chance of rain each day?
Rainy days are not independent events, but for theis question you will need to assume that they are. Otherwise, there is insufficient information to answer.
Prob(a day being rainy) = 0.1
so Prob(a day being not rainy) = 1 - Prob(a day being rainy) = 1 - 0.1 = 0.9
Therefore, Prob(7 days being no rainy) = (0.9)7
and so, Prob(At least one rainy day in 7) = 1 - Prob(no rainy days in 7)
= 1 - (0.9)7 = 0.5217 (approx).
What else can I help you with?
Does a thirty percent chance of rain really mean it will rain?
A thirty percent chance is a low probability, so it probably won't rain, but it could.
If there is a 75 percent chance of rain on Monday and a 25 percent chance of rain on Tuesday what is the probability of rain on either Monday or Tuesday?
thirteen sixteenths.
Does a 10 percent chance of rain mean that it will rain?
No, it means it might, with a probability of 0.1
What is the probability of failing 75 times on a 2 percent chance of success?
If the probability of succeeding is 2%, then the probability of failing is 98%. The probability, then, of failing 75 times is 98%75, which is 22%.
When you toss a coin the probability that it will land heads up is 25 percent?
No, when you toss a coin there is a 50 percent chance it will land heads up.
What is the Probability of snowing on Christmas eve?
probably a 93 percent chance.
Does a thirty percent chance of rain really mean it will rain?
A thirty percent chance is a low probability, so it probably won't rain, but it could.
If there is a 75 percent chance of rain on Monday and a 25 percent chance of rain on Tuesday what is the probability of rain on either Monday or Tuesday?
thirteen sixteenths.
What is the probability that someone lives if they have a 10 percent chance of dying in 10 years?
The probability of someone living for ten years is 90%.
Does a 10 percent chance of rain mean that it will rain?
No, it means it might, with a probability of 0.1
What is the probability of failing 75 times on a 2 percent chance of success?
If the probability of succeeding is 2%, then the probability of failing is 98%. The probability, then, of failing 75 times is 98%75, which is 22%.
In a certain city the probability of catching a burglar is 30 percent and the chance of convicting a burglar once caught is 60 percent What is the chance of catching and convicting a burglar?
18%
Where is probability used in the real world?
Probability is used everywhere: Betting odds. Medical odds, (chance of survival or chance of side effect happening). Anywhere we calculate risks (insurances calculate premiums based on probability). Communication Networks
The probability of Ann passing the math test is 90 percent her English test is 80 percent and her Chemistry test is 70 percent What is the probability she passes all three tests?
Sounds like a 100% chance of passing school.
If there is a 60 chance of rain tomorrow and a 40 chance of wind and rain what is the probability that it is windy given that it is rainy Round your answer to the nearest percent.?
It is 67%.
Can probability be higher than 100 percent... Say you have 4 oil wells each with a 30 percent chance of hitting ...Isn't the calculated probability of one hitting 120 percent?
No. Probability is defined as a number between 0 and 1 (100 percent). If you have four oil wells, each with a probability of hitting being 30%, then the probability of at least one hitting is 100% - (100% - 30%)4, or about 76%.
When you toss a coin the probability that it will land heads up is 25 percent?
No, when you toss a coin there is a 50 percent chance it will land heads up.
