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dexar [7]
3 years ago
14

Alyssa flips a fair,two-sided coin four times.What is the probability that the coin lands with heads facing up exactly three tim

es?
Mathematics
1 answer:
NARA [144]3 years ago
5 0
Fair coin means P(heads) = 1/2 for each flip.
The three flips are independent, so multiplication rule applies.
P(head,head,head)=(1/2)(1/2)(1/2)=1/8
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Step-by-step explanation:

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Answer:

Area of shaded region ≈ 192.42

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3 years ago
A hypothetical population consists of eight individuals ages 13, 14, 17, 20, 21, 22, 24, &amp; 30 years.
Alika [10]

Complete Question

A hypothetical population consists of eight individuals ages 13 14 17 20 21 22 24 30 years.  

A: what is the probability that a person in this population is a teenager?  

B: what is the probability of selecting a participant who is at least 20 years old?

We have that  probability that a person in this population is a teenager and probability of selecting a participant who is at least 20 years old is

From the question we are told

A hypothetical population consists of eight individuals ages 13, 14, 17, 20, 21, 22, 24, & 30 years.

  • P(T)=0.38
  • P(T')=0.63

a)

Generally the equation for the  probability that a person in this population is a teenager   is mathematically given as

P(T)=\frac{no of teens}{n}\\\\P(T)=\frac{3}{8}

P(T)=0.38

b)

Generally the equation for the probability of selecting a participant who is at least 20 years old  is mathematically given as

P(T)=\frac{ participants\ who\ is\ at\ least\ 20\ years old}{n}\\\\P(T)=\frac{5}{8}

P(T')=0.63

For more information on this visit

brainly.com/question/11234923?referrer=searchResults

6 0
2 years ago
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