1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pie
3 years ago
5

There are two coins, one is fair and one is biased. The biased coin has a probability of landing on heads equal to 4/5. One of t

he coins is chosen at random (50-50), and is flipped repeatedly until it lands on tail. If it landed on heads 4 times before landing on tails, what is the posterior probability that coin chosen was biased?
Mathematics
1 answer:
den301095 [7]3 years ago
3 0

Answer:

72.4%

Step-by-step explanation:

The probability of A occurring given that B occurs = the probability of both A and B / the probability of B

P(A|B) = P(A∩B) / P(B)

This can be rearranged as:

P(A∩B) = P(B) P(A|B)

In this case:

A = biased coin is chosen

~A = fair coin is chosen

B = 4 heads then 1 tail

First, let's find P(A∩B).

P(A∩B) = P(B) P(A|B)

P(A∩B) = ½ × ₅C₄ (⅘)⁴ (⅕)¹

P(A∩B) = 0.2048

Next, find P(~A∩B).

P(~A∩B) = P(B) P(~A|B)

P(~A∩B) = ½ × ₅C₄ (½)⁴ (½)¹

P(~A∩B) = 0.078125

Therefore, the probability that the coin is biased is:

P = P(A∩B) / (P(A∩B) + P(~A∩B))

P = 0.2048 / (0.2048 + 0.078125)

P = 0.723866749

The probability is approximately 72.4%.

You might be interested in
What is the tangent of angle P?<br> 12/13<br> 5/13<br> 12/5<br> 5/12
scoundrel [369]
Tangent is opposite side/ adjacent side
TanP = 5/12 
Hope it helped!
3 0
3 years ago
Your friend says after using her calculator, she found the p-value equals 7.145013. Can this be right? If not, can you determine
Liula [17]

Answer:

No, It is not possible.

Step-by-step explanation:

3 0
3 years ago
8th grade math! Please help. timed test
jeka57 [31]

Answer: c

Step-by-step explanation:

3 0
3 years ago
Syyedah throws a baseball with an initial velocity of 30 meters per second from a roof at an initial height of 75 meters. Write
Yuliya22 [10]
Initial velocity: v o = 30 m/s
h = 75 m
h = v o * t + g * t² / 2
75 = 30 · t + 9.8 · t² / 2
75 = 30 t + 4.9 t²
An equation is: y = 4.9 t² + 30 t - 75
4.9 t² + 30 t - 75 = 0
t_{12}= \frac{-30+/- \sqrt{900+1470} }{9.8}= \\  =\frac{-30+48.68}{9.8}
t = 1.9 s


4 0
3 years ago
A rocket travels in a trajectory given by the equation s = -4.9t 2 + v0t, where s is meters above ground, t is time in seconds a
Reptile [31]

Step-by-step explanation:

s = -4.9t² + 49t

The vertex of the parabola is at t = -b/(2a).

t = -49 / (2 × -4.9)

t = 5

The rocket reaches its maximum height after 5 seconds.

5 0
3 years ago
Other questions:
  • What’s the correct answer for this?
    15·1 answer
  • Consider the equation 5x+10=30and [x+10]=30
    7·1 answer
  • The number y of cups of flour used to make x loaves of bread is represented by the equation y=3x. Graph the equation. what are t
    7·1 answer
  • ??????????????????????????????????????????????????
    5·2 answers
  • !!!What is the range of the data shown below!!!
    6·1 answer
  • It takes 25 minutes to fry a burger at Jill street, how long will it take to fry 13 burgers​
    5·2 answers
  • Write the equation of the line that contains the following two points (0,-1)(1.3)
    8·1 answer
  • Math on the Spot Funtime Carnival charges a $3.00 entrance fee and $1.00 per
    13·1 answer
  • Solve by completing the square: x^2+18x+45=0
    10·1 answer
  • Can someone walk me through this please?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!