Professors often attempt to determine if the submissions by the students are genuine or copied off the web sources. The program that performs this task is only 95 % accurate in correctly identifying a genuine submission and 80% accurate in correctly identifying copies. Based on the past statistics, 15% of the student turned in copied work. If a work is identified as a copy by the program, what is the probability that it is indeed a sample of copied work.

Answers

Answer 1

Answer:

0.7385 = 73.85% probability that it is indeed a sample of copied work.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]

In which

P(B|A) is the probability of event B happening, given that A happened.

[tex]P(A \cap B)[/tex] is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Identified as a copy

Event B: Is a copy

Probability of being identified as a copy:

80% of 15%(copy)

100 - 95 = 5% of 100 - 15 = 85%(not a copy). So

[tex]P(A) = 0.8*0.15 + 0.05*0.85 = 0.1625[/tex]

Probability of being identified as a copy and being a copy.

80% of 15%. So

[tex]P(A \cap B) = 0.8*0.15 = 0.12[/tex]

What is the probability that it is indeed a sample of copied work?

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.12}{0.1625} = 0.7385[/tex]

0.7385 = 73.85% probability that it is indeed a sample of copied work.


Related Questions

PLEASE HELP ME MARKING PEOPLE AS BRAINLIST

Answers

Answer:

A

Step-by-step explanation:

What is the value of the expression (25-7)x2 divided by 4+2

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{\dfrac{(25-7)(2)}{4}+2}[/tex]

[tex]\mathsf{25-7=\bf 18}[/tex]

[tex]\mathsf{\dfrac{\bold{18}(2)}{4}+2}[/tex]

[tex]\mathsf{18(2)= \bf 36}[/tex]

[tex]\mathsf{\dfrac{\bold{36}}{4}+2}[/tex]

[tex]\mathsf{\dfrac{36}{4}=\bf 9}[/tex]

[tex]\mathsf{\bold{9}+2 }[/tex]

[tex]\bold{= 11}[/tex]

[tex]\boxed{\large\textsf{Possible answer \#1: \bf 11 }}\huge\checkmark[/tex]

[tex]\huge\text{OR....}[/tex]

[tex]\mathsf{\dfrac{(25-7)(2)}{4+2}}[/tex]

[tex]\mathsf{25-7=\bf 18}[/tex]

[tex]\mathsf{\dfrac{\bold{18}(2)}{4+2}}[/tex]

[tex]\mathsf{18(2)=\bf 36}[/tex]

[tex]\mathsf{\dfrac{\bold{36}}{4+2}}[/tex]

[tex]\mathsf{4+2= \bf 6}[/tex]

[tex]\mathsf{\dfrac{36}{\bold{6}}}[/tex]

[tex]\mathsf{\bf = 6}[/tex]

[tex]\boxed{\large\textsf{Possible answer \# 2: \bf 6}}\huge\checkmark[/tex]

[tex]\boxed{\boxed{\large\text{{Answer(s): \bf Answer \#1: 11 OR Answer \#2: 6}}}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

PLS HELPPPPPP MEEEEEEE

Answers

Answer:

6.24x10^2

Step-by-step explanation:

helppppppppppppppppp

Answers

Answer: x smaller than or equal to -4

pls answer it i really need the answers : (

Answers

Answer:

Subscribe Single-3 FF on yt

Factorise fully 6x+8​

Answers

Answer: To factorize the expression 6x + 8 fully, we can first look for the greatest common factor (GCF) of the two terms. In this case, the GCF is 2.

Step 1: Factor out the GCF:

2(3x + 4)

Now, we have the expression 3x + 4 inside parentheses. This expression cannot be further factorized since there are no common factors other than 1.

Therefore, the fully factorized form of 6x + 8 is:

2(3x + 4)

Step-by-step explanation:)

The factored expression is:

↬ 2(3x + 4)

Step-by-step explanation:

To factor the expression, look at its GCF (greatest common factor).

Clearly the GCF of both terms is 2. So what we do next is we divide both terms by 2 :

6x ÷ 2 + 8 ÷ 2

The result is :

3x + 4

And now the 2 goes outside the parenthesis:

2(3x + 4)

Hence, the answer is 2(3x + 4).

Solve for the value of x.

Answers

Answer:

x = 15

Step-by-step explanation:

Similar triangles and proportional side lengths.

10/4 = x/6

5/2 = x/6

2x = 5 * 6

2x = 30

x = 15

HELP PLZZZ questions are on the screenshot whats y/4+6=10

Answers

Answer:

16

Step-by-step explanation:

y/4=4

y=16

A rectangle has a side length of 9 centimeters and 6 centimeters. What is the area of the rectangle?

Answers

Answer:

54 cm²

Step-by-step explanation:

To find the area, use the formula, A = lw

Plug in the length and width, and solve:

A = lw

A = 9(6)

A = 54

So, the area of the rectangle is 54 cm²

Answer:

[tex] \bf \huge 54 \: cm \: {}^{2} [/tex]

Step-by-step explanation:

correct Question :

A rectangle has a side length and wide of 9 centimeters and 6 centimeters. What is the area of the rectangle

Given that :

A rectangle has a side length and wide of 9 centimeters and 6 centimeters.

to find :

area of rectangle.

formulas used :

A = l × w

where,

A = area of rectangle l = lenth of rectangle W = wide of rectangle

explanation :

⟼ l = 9 cm

⟼ W = 6 cm

⟼ Area = l × b

⟼ Area = 9 × 6 cm

⟼ Area = 54 cm².

the area of rectangle is 54 cm².

What is the common ratio of the geometric sequence below 18,-6,2,-2/3

Answers

Answer:

-1/3 is common ratio

Step-by-step explanation:

someone please help me asnwer this!!

Answers

Answer:

5 units is the answer.

Step-by-step explanation:

[tex]d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{(8-8)^2 + (9-4)^2}\\\\d=\sqrt{(0\\)^2+(5)^2} \\\\d=\sqrt{25} \\\\d=5 \\\\[/tex]

∴ d = 5 units

Give the most precise
name for the quadrilateral.
Then, find x and y.

A) square x=80 y=5
B) rhombus x=80 y=5
C) rhombus x=100 y=10
D) square x=80 y=10
E) rectangle x=100 y=7

Answers

Answer:

B

Step-by-step explanation:

quadrilaterals= 360 degrees, now if you sub 80 for x, 80 +100 is 180 x 2( counting the other side) so 180 x 2 is 360

*I know there is a better way to explain it, but this is a way i find it

Will give brainliest

Find the area of this circle. Use 3 for .
A = ar2
10 cm
[?] cm2

Answers

Answer:

300

Step-by-step explanation:

3x10x10=300

Answer:

300 cm^2

Step-by-step explanation:

A= (3)(10^2)

A= 3(100)

A= 300

help please grade 8 20 points and i need it

Answers

Answer

1) (4,6)

2) (5,5)

3) (2,6)

Step-by-step explanation:

HELP ME RN. PLS PLS PLS

Answers

it is the 3 one and it is esay

who tryna play 2k or cod

Answers

Answer:

i'M DOWN IT'S CHADCW1234

Step-by-step explanation:

Answer:

o7ft65tu7lfl875t6u

Step-by-step explanation:

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Answers

Answer:

12 ANJIRRTOLOLLSKALIII

OOP MAYBE TRY TO ERASE IT

A woman sold an article for $1400.00 and made a profit 25%. Find the cost price and the profit​

Answers

Answer:

$1120 and $280.

Step-by-step explanation:

$1400 = 125%

100% = $1120

The cost of the price was $1120.

$1400 - $1120 = $280.

The profit was $280.

Hope this helps!


Someone please help me!

Answers

Answer:

x^2+y^2=25

Step-by-step explanation:

bc x-0=x and ect.

Find the value of x.
B
10-X
3
D
E
х
2.
A
c
x = [?]

Answers

Answer:

The answer would be 4

Step-by-step explanation:

2/3=x/10-x

(cross multiply)

2(10-x)=3x

20-2x=3x

20=5x

(divide by 5)

x=4 (That would be the answer You welcome.)

Fill in the blank 4

For the given triangle the value of x = 4.

In the given figure,

The triangles, ABC and DBE are similar

Since we know that,

Triangles that are similar to one another in shape but differ in size are known as similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.

Therefore, we have the proportionality,

EC/BE = AD/DB

⇒ 2/3=x/10-x

After cross multiplying

⇒ 2(10-x)=3x

⇒ 20-2x=3x

⇒ 20=5x

Divide both sides by 5, and we get,

⇒  x = 4

Hence,

The value of x = 4.

To learn more about the triangle visit;

brainly.com/question/1058720

#SPJ2

15.09 ÷ 0.01 = ?
267.4 ÷ 1/10 = ?

Answers

Answer:

Dividing by a fraction is multiplying by the reciprocal

15.09/1/100=15.09*100=1509

267.4/1/10=267.4*10=2674

Answer:

15.09 ÷ 0.01 = 1509

267.4 ÷ 1/10 = 2674

hope these are the answers you are looking for

Step-by-step explanation:

How many people out of 100,000 will survive until age 90?

Answers

Answer:

81.26

Step-by-step explanation:

This amount of people survived until 90 according to an article:

20,898 + 15,034 + 26,183 + 21,196 + 15,318 + 26,479 + 15,864 + 9,952 + 21,357 = 172,281

"172,281" as a percentage is:

81.26

The percentage people out of 100,000 will survive until age 90 would be 81.26.

How to calculate unit price of something?

Unit means 'single entity', the fundamental constructing block. Usually, it is 1 in mathematics and science.

Thus, unit price of something is price of 1 thing.

So, suppose we're taking about price of mangoes, then unit price will denote the price of 1 mango.

The data is given in the image attached below;

We need to find How many people out of 100,000 will survive until age 90.

A percentage is a minimum number or ratio that is measured by a fraction of 100.

The amount of people survived until 90 according to an article:

20,898 + 15,034 + 26,183 + 21,196 + 15,318 + 26,479 + 15,864 + 9,952 + 21,357

= 172,281

Therefore, "172,281" as a percentage is 81.26.

The percentage people out of 100,000 will survive until age 90 would be 81.26.

Learn more about unit price here:

https://brainly.com/question/945712

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how do you find lateral surface area​

Answers

Answer: This lateral surface area can be calculated by multiplying the perimeter of the base by the height of the prism. For a right circular cylinder of radius r and height h, the lateral area is the area of the side surface of the cylinder: A = 2πrh.

Step-by-step explanation:

The segments shown below could form a triangle. A. True B. False​

Answers

Answer:

true

Step-by-step explanation:

join a, b, c the attach the value A to C=9, B to C=7, and B to A=16

How to show work on this one topic is angles formed by 2 chords and secants

Answers

Answer:

Step-by-step explanation:

-1/3 – ¼
please show work if you don`t please don`t answer the question

Answers

Answer:

-1/3 - 1/4

First, make common denominators

-4/12 - 3/12

Then subtract the numerators

- 7/12

192, 96, 48, 24 what are the next three terms

Answers

Answer:

12,6,3

Step-by-step explanation:

its dividing by half

Based on these results, what is the probability that Ms. Le
will choose a yellow or purple marble?
FOR BRAINLITS!!

Answers

Option A 2/5 is correct

Solve the equation 6 = p -8

Answers

Answer:

p = 14

Step-by-step explanation:

6 = p - 8

We want to isolate p, so add 8 to both sides.

6 + 8 = p

Add.

14 = p

Hope this helps!

Answer is: P = 14

Switch up the numbers.

6 = p - 8 → 6 + 8 = P

Solve for P.

6 + 8 = 14

Hence, 14 is the answer.

The table shows the prices for peanut butter sold in jars of different weights. Which size jar is the best buy?


NO ANSWERS FROM UNKNOWN FILES OR I'LL REPORT IT!!!

Answers

Answer: 48 oz is the best buy

Step-by-step explanation:

You can get way more for cheaper considering 24oz costs $19.12 and if you do 24x2 you get 48 so if you buy 2 of the 24oz ones you have to pay $18.24

HOPE THIS HELPS ^^

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