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xxMikexx [17]
3 years ago
6

Toss a coin 5 times. what is the probability of getting exactly 2 tails

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0
The total number of outcomes is (1/2)^5 dice each of the 5 coin tosses is an independent event. From the 5 possible tails, exactly 2 tails need to be selected. So the favored outcome is 5C2 = (5*4)/(1*2)= 10. The probability is 10/32 = 5/16.
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1. Why is it important to separate experimental groups by a random process?
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Randomization allows a sample or small groups with similar characteristics to determine a probability or to hypothesize an event, that is why this type of sample is important in an experiment, that is, to carry it out in a random way.

<h3> What is randomization?</h3>

Randomization allows a sample or small groups with similar characteristics to determine a probability or to hypothesize an event, that is why this type of sample is important in an experiment, that is, to carry it out in a random way.

If a crop at a certain time of year, for example in summer, is affected by a certain fungus, to know if it is really the time of year that affects this problem, random samples of the same crop with the same characteristics and put it to the test at another time of the year to see if the weather is really a risk factor in the spread of this fungus.

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6 0
2 years ago
A six-sided die is rolled eleven times. What is the probability that the die will show an even number exactly nine times?
Black_prince [1.1K]

Answer:

It is D

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