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
anastassius [24]
3 years ago
5

Dalgliesh the detective fancies himself a shrewd judge of human nature. In careful tests it has been discovered that he is right

80 percent of the time when he says that a ran­domly chosen suspect is lying. Dalgliesh says that Jones is lying. The polygraph expert, who is right 100 percent of the time, says that 40 percent of the subjects interviewed by Dalgliesh are telling the truth. What is the probability that Jones is lying?
Mathematics
1 answer:
Dafna11 [192]3 years ago
4 0

Answer:

The probability that Jones is lying is 6/7

Step-by-step explanation:

First we will list out 2 different cases when the outcome is a lie

1.probability that Jones tells lies is = 0.6 and probability that dalgiliesh analyses it correctly is 0.8

So the probability that dagliesh correctly analyses that he is telling lies is 0.8*0.6=0.48

2.Probability that Jones tells truth is 0.4 and if dagliesh analyses it incorrectly (which has a probability of 0.2) the outcome(as analysed by dagiliesh) is a lie

So probability that dagliesh analyses Jones truth as a lie is 0.2*.0.4=0.08

Total probability of outcome being a lie is 0.48+0.08=0.56

But we need the probability of Jones actually saying a lie which is nothing but 0.48/0.56= 6/7

You might be interested in
4) The cost of membership at local country club is $125 per family member per month. Each family also has to pay $75 in service
lyudmila [28]
C(x)=125x+75
You multiply 125 by how many family members and and the 75
6 0
3 years ago
What’s 2+2x 234+47382939593939
Illusion [34]
2+2*234+473829359593939=473829359594409
idk why I answered this
7 0
3 years ago
Read 2 more answers
A rectangular hat box has a value of 5,184 cubic inches. The box is 2feet Long by 18in wide. What is the hat box’s height?
Hatshy [7]
D would be the correct answer. Post brainliest if this helped plz :)
6 0
3 years ago
How to do this problem. I need help <br> How to solve the e
Radda [10]
The answer is  6*2-6. I hope this helps u

5 0
3 years ago
Manda uses the recipe shown to make punch for a family party. amanda’s punch recipe 7 parts mixed fruit juice 2 parts lemonade h
tia_tia [17]
7:2....added = 9

7/9(180) = 1260/9 = 140 fluid oz .....mixed fruit
2/9(180) = 360/9 = 40 fluid oz <== lemonade
6 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone tell me how to do this one plz
    15·1 answer
  • What is the median score for the history class final test score
    8·1 answer
  • The kindergarten teacher wants to divide 1/2 of her classroom into 5 equal sections for stations
    5·2 answers
  • What property is 6x + (7 + 2x) = 6x + (2x + 7)
    13·2 answers
  • How far does the wijw nj jh jevh dhhb vte hbhe gvbf5wf bjehn v
    14·1 answer
  • Which represents the solution set of the inequality 5x-9&lt;21?
    6·2 answers
  • Please help, this is called Writing Equations
    14·1 answer
  • Charity is packing a 2-pounds container of trail mix into bags for a camping trip. Each bag holds 1/8 pound trail mix. If Charit
    15·1 answer
  • Simplify: √18 - √24 + √54
    8·2 answers
  • 43. Consider the equation 4(x-8)+y=9(x-2)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!