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serious [3.7K]
3 years ago
15

A weather forecast states that there is a 20% probability of rain in the next three days. Describe a simulation you could perfor

m using random numbers to find the experimental probability that it will not rain on any of the next 3 days.
Mathematics
1 answer:
iVinArrow [24]3 years ago
3 0

Answer:

my hands hurt, pls give brainilist and hope this helps

Step-by-step explanation:

Before leaving for work, Victor checks the weather report in order to decide whether to carry an umbrella. The forecast is “rain" with probability 20% and “no rain" with probability 80%. If the forecast is “rain", the probability of actually having rain on that day is 80%. On the other hand, if the forecast is “no rain", the probability of actually raining is 10%.

1. One day, Victor missed the forecast and it rained. What is the probability that the forecast was “rain"?

2. Victor misses the morning forecast with probability 0.2 on any day in the year. If he misses the forecast, Victor will flip a fair coin to decide whether to carry an umbrella. (We assume that the result of the coin flip is independent from the forecast and the weather.) On any day he sees the forecast, if it says “rain" he will always carry an umbrella, and if it says “no rain" he will not carry an umbrella. Let U be the event that “Victor is carrying an umbrella", and let N be the event that the forecast is “no rain". Are events U and N independent?

3. Victor is carrying an umbrella and it is not raining. What is the probability that he saw the forecast?

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andriy [413]

Answer:

1+2\sqrt{2} seconds

Step-by-step explanation:

When the ball hits the ground, its height will obviously be 0. Therefore, you can set up the equation the following way:

0=-5t^2+10t+35 \\\\-5(t^2-2t-7)=0

Plugging this into the quadratic equation, you get:

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Since the time must be positive, it takes the ball 1+2\sqrt{2} seconds to hit the ground, or around 3.828. Hope this helps!

7 0
3 years ago
4.890 in expanded form?
dangina [55]

Answer: The student’s values are accurate as well as precise.

Explanation:

Precision refers to the closeness of two or more measurements to each other.

For Example: If you weigh a given substance three times and you get same value each time. Then the measurement is very precise.

Accuracy refers to the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 50 kg and one person weighed 49 kg and another person weighed 48 kg. Then, the weight measured by first person is more accurate.

Given: Mass = 5.000 g

Mass weighed by A has values 4.891 g , 4.901 g and 4.890. Thus the average value is

Thus as the measured value is close to the true value, the student’s values are accurate and as the values are close to each other, the measurement is precise.

6 0
3 years ago
What would the answer be
ArbitrLikvidat [17]

Answer:

12x^4-35x^3+45x^2-13x-15

Step-by-step explanation:

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3 0
3 years ago
Power bills usually show____.
Ede4ka [16]

D

Step-by-step explanation:

Based on the pricing per kilowatt energy set by the distributor/regulation in the jurisdiction, the due amount to be paid to the distributor may differ;

kW/h * price per kW = power bill

The power bill is also paid regularly such as monthly or annually and therefore will bear a due date.

Learn More:

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8 0
3 years ago
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velikii [3]

Answer:

8 dog/cat

Step-by-step explanation:

one dog/cat is worth 8.5% 8 puppies divided by 32% = 8.5. 8.5 x 8 =68 100% - 32% is 68% divided by 8.5 equals 8

if this helped pls mark brainliest. and 5 star

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3 years ago
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