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
Sergio039 [100]
3 years ago
8

Ms. Davis is doing an activity with her statistics students where she gives them a 202020-question multiple choice test, and the

y know none of the answers. Students need to guess on every question, and each question has 555 possible choices, 111 of which is correct.
What are the mean and standard deviation of the number of questions that each student gets correct?
You may round your answers to the nearest tenth.
Mathematics
1 answer:
chubhunter [2.5K]3 years ago
4 0

Answer:

The mean and standard deviation of the number of questions that each student gets correct are 4 and 1.789 respectively (

You might be interested in
What is the perimeter?
seraphim [82]

Answer:

59.

Step-by-step explanation:

I´m pretty sure the answer is 59. If I´m wrong then sorry.

4 0
4 years ago
Explain why the expression below always has the same value, no matter what number other than zero you choose for p.
Natasha2012 [34]

Answer and explanation:

The expression P-2P+3P-4P cannot have the same values for different values of P. Let us illustrate this by substituting different values of P in the expression:

If P= 2

Substitute P=2 in the expression

2-2×2+3×2-4×2

=2-4+6-8

=-4

If P= 3

Substitute P=3 in the expression

3-2×3+3×3-4×3

=3-6+9-12

=-6

If P = 1

Substitute P=1 in the expression

1-2×1+3×1-4×1

= 1-2+3-4

= -2

If P = -2

Substitute P=1 in the expression

-2-2×-2+3×-2-4×-2

= -2+4-6+8

=4

Therefore we can see from the above that the expression has different values for different values of P

8 0
3 years ago
The graph of g(x) is a parabola with a vertex at (0, 2).
Yuri [45]
The function g(x) has vertex (0,2) and the function of the graph has vertes (-2,0), so this latter is the function f(x).

Now analyze the statements.

<span>Neither function is an even function ---> FALSE because the fact that the function g(x) has vertex (0,2) means that the symmetry axis of the parabole is the y-axis, so you know that g(x) = g(-x) which is the definition of an even function.

Only the function g(x) is an even function ---> TRUE: I already explained you why you can tell that g(x) is even. Now you just mut observe the graph of f(x) to realize that f(x) is not equal to f(-x) which means that it is not even.

Both functions are even functions ---> FALSE as we stated above f(x0 is not even.

Only the function f(x) is an even function ---> FALSE as we stated above.</span>
5 0
3 years ago
Help with my math please thank you
OlgaM077 [116]

Answer:

-11 on the right

0 in the middle

12 on the left

8 0
3 years ago
What is the missing number in the solution to 948 = 10 below?<br> A. 48<br> B. 4<br> C. 40<br> D. 80
denis23 [38]

Answer:

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Help please ASAP!!!!
    9·1 answer
  • This is Algebra I Math. I neeeedd help!!!
    12·1 answer
  • Nicole uses 5 ounces of mushrooms, 2 ounces of butter, and 1/4 a pint of cream to make mushroom soup. Find the number of ounces
    6·1 answer
  • In triangle abc what is the value of cos b A 5/13 B 12/13 C 5/12 D 13/12
    14·1 answer
  • These figures are similar the area of one is give. Find the area of the other
    13·1 answer
  • Michael brought 2 gallons of lemonade for his class party. How many 1 cup servings does he have for his class? (1 gallon = 16 cu
    13·2 answers
  • A random sample of 900 13- to 17-year-olds found that 411 had a computer in their room with Internet access. Let p be the propor
    13·1 answer
  • 14. Determine the arc length of AB. Give your answer to two decimal places.
    14·1 answer
  • I need help on this ASAPPPPPPP!!!!!!
    12·2 answers
  • A shop sells apples and oranges in the ratio 5:2.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!