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daser333 [38]
2 years ago
9

Elijah is going to spin a spinner 180 times.

Mathematics
2 answers:
ella [17]2 years ago
8 0

Answer:

(C) Elijah’s prediction is high because 180 times one-fourth = 45.

Step-by-step explanation:

Because the spinner is divided into 4 equal sections, they all have an equal chance of being landed on. Therefore, you must do 180*1/4 which is 45. This means that's Elijah's prediction of 60 of the spins will result in 3 is too high.

Nataliya [291]2 years ago
4 0

Answer:

C

Step-by-step explanation:

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<h2>Answer:</h2>

1. A coin is tossed four times. What is the probability of getting four heads?

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So the chance of getting all four heads can be calculated as :

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Each toss can have 2 results, so 4 flips will have 2^{4} or 16 results.

Getting two heads means getting two tails also. So, we can get the number of times two heads come = \frac{4!}{2!2!} = 6

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3. Not getting two heads means getting 3 tails and 1 head or all tails.

Probability of having all tails = 1/2\times1/2\times1/2\times1/2=1/16

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Probability of one head (4th trial) and three tails (the 1st, 2nd and 3rd trials) = 1/16

So, the total probability showing only one or none head and at least three tails = 1/16+1/16+1/16+1/16+1/16=5/16

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