This is a subtraction problem so it would read 55-34 and the answer is 21 posters are animals.
The required probability of the coin landing tails up at least two times is 15/16.
Given that,
A fair coin is flipped seven times. what is the probability of the coin landing tails up at least two times is to be determined.
<h3>What is probability?</h3>
Probability can be defined as the ratio of favorable outcomes to the total number of events.
Here,
In the given question,
let's approach inverse operation,
The probability of all tails = 1 / 2^7 because there is only one way to flip these coins and get no heads.
The probability of getting 1 head = 7 /2^7
Adding both the probability = 8 / 2^7
Probability of the coin landing tails up at least two times = 1 - 8/2^7
= 1 - 8 / 128
= 120 / 128
= 15 / 16
Thus, the required probability of the coin landing tails up at least two times is 15/16.
Learn more about probability here:
brainly.com/question/14290572
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Answer:
COMPOUND PROBABILITY: John has a cookie jar with the following cookies in it. He plans to eat 2 cookes. What is the probability that he will select a Macadamia Nut Cookie AND then select a Cranberry Pecan cookie? Remember, since he is eating the cookies, he will not be replacing the cookies in the jar and the order he selects the cookies does not matter here. Simply all answers to lowest terms
The answer is D) 12
If you need proof, just comment.
Answer:
2
Step-by-step explanation:
Between each term you are multiplying the previous term by 2, making 2 the common ration of the sequence.
