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
guajiro [1.7K]
3 years ago
6

Two students taking a multiple choice exam with 20 questions and four choices for each question have the same incorrect answer o

n eight of the problems. The probability that student B guesses the same incorrect answer as student A on a particular question is 1/4. If the student is guessing, it is reasonable to assume guesses for different problems are independent. The instructor for the class suspects the students exchanged answers. The teacher decides to present a statistical argument to substantiate the accusation. A possible model for the number of incorrect questions that agree is:
Mathematics
1 answer:
MrRa [10]3 years ago
3 0

Answer:

The Possible model is binomial distribution model.

Step-by-step explanation:

The argument that both students cheated in the exam can be proved by a hypothesis that both the students got the same answers incorrectly.

The same incorrect answers prove that both students have cheated on the test.

Therefore the sample of incorrect answers is, n = 8

Thus, the success probability, P = 0.25

Since the given condition has only two outcomes that are choosing the same answer or not choosing the same answer. Thus, this can be solved by the binomial distribution model.

So, binomial distribution with n = 8 and p = 0 .25.

You might be interested in
Shana is at the grocery store comparing two brands of juice. Brand A costs $3.84 for a 16-ounce bottle. Brand B costs $4.50 for
DaniilM [7]
I hope this helps, it is correct.

5 0
3 years ago
The measure of angle O is 110°. what is the angle of r and p?
sergij07 [2.7K]

Answer:

Choice D for Angle R

70 degrees for Angle P

Step-by-step explanation:

Google "central angles and inscribed angles geometry" for an explanation.

It's actually a poorly worded question.

7 0
4 years ago
Read 2 more answers
Alexander is ridiang his bime to school, after one mile, he is a third of the way there. how much farther does he have to ride?
lisov135 [29]
He has to ride 2 more miles
6 0
3 years ago
Does 10,15,20 form a right triangle
sveta [45]
A right triangle can only be formed when you use the 3/4/5 rule.
The 3/4/5 rule is a^2 + b^2 = c^2.

We will use 10 for a, 15 for b, and 20 for c.

a^2 + b^2 = c^2

Plug in 10 for a, 15 for b, and 20 for c.

10^2 + 15^2 = 20^2

10^2 = 100

15^2 = 225

20^2 = 400

100 + 225 = 400
This is not applicable, as 100 + 225 = 325.

Your answer is:

No, 10,15,20 does not form a right triangle.

I hope this helps!
5 0
4 years ago
What is a correct name for the angle shown?
Masteriza [31]

Answer:

the answer is option B. angle S.

when naming an angle we place the vertex of the angle in the middle. here the angle is RST. But that option is unavailable. very often when there are no other angles interfering with the parent angle, we represent it using one letter that is the mid letter, the vertex. here in this case it is S.

4 0
3 years ago
Read 2 more answers
Other questions:
  • (A3- 2a2) - ( 3a2- 4a3)
    12·2 answers
  • manu's father is 24 years younger than manu's grandfather and 30 years older than him. The sum of ages of all the three persons
    11·2 answers
  • What is -4 4/5 as a decimal
    15·1 answer
  • The graph below represents which system of inequalities? graph of two infinite lines that intersect at a point. One line is soli
    8·2 answers
  • In a circle with a radius of 27 2/5 in., an arc is intercepted by a central angle of 7π/4 radians.
    14·2 answers
  • How to solve this: <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B5%7D%20%20%2B%208" id="TexFormula1" title=" \frac{x
    6·2 answers
  • The recycling center pays $0.01 for each aluminum can recycled. Dan was payed $10.00 for all his aluminum cans. How many aluminu
    5·1 answer
  • The Johnson's bill at the restaurant is $112.00. How much should Mr. Johnson leave as a tip if he plans to tip 15%?
    13·2 answers
  • Lines x and y are parallel and are cut by the transversal b. If the measure of angle 1 is 57°, what is the measure of angle 6? E
    14·1 answer
  • 32% of 250 = ?<br> I need help hurry!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!