A quiz consists of 920 true or false questions. If the student guesses on each question, what is the mean number of correct answers

Answers

Answer 1

Answer:

460

Step-by-step explanation:

This quiz is Said to consist of 920 questions. Each if these questions have 2 options of answering them only. Which is True or False.

True represents correct = 0.5

False represents wrong = 0.5

The probability of correct is = 0.5

With a sample size of 920

Mean = no

= 920x0.5

= 460

So the mean number of correct answer from this calculations I just did is equal to 460


Related Questions

the first row in a pattern of the 5 tiles.each row after the first had 2more tiles

Answers

Answer:

whats the question?

Step-by-step explanation:

Look at the image. The School PTA spent 54% of its annual budget on sixth-grade
graduation. What fraction of the PTA's budget was spent on the graduation?

Answers

B hope you have a blessed day!

A train travels 40 miles in 65
minutes. To the nearest tenth of a
mile, how far does the train trave
per minute?

Answers

Answer:

40/65 OR 8/13

Step-by-step explanation:

Jack plots points showing equivalent ratios on the coordinate plane above.

which ordered pair if plotted above would represent a ratio that is equivalent to those shown?​

Answers

Answer:

(4,18)

Step-by-step explanation:

it would fit right into the line. i hope this helps.

Using the relation f(x) = 2x + 16, what is the value of x if f(x) = 40?

Answers

Answer:

12

Step-by-step explanation:

40= 2x + 16

subtract 16 from both sides

24 = 2x

divide both sides by 2

12 = x

if 4(x-1)=8(x-2),then x=​

Answers

4(x-1)=8(x-2)

multiply the first bracket by 4

(4)(x)=4

(4)(-1)=-4

multiply the second bracket by 8

(8)(x)=8x

(8)(-2)=-16

4x-4=8x-16

move 8x to the other side ( in other words combine like terms)

sign changes from +8x to -8x

4x-8x-4=8x-8x-16

-4x-4=-16

move -4 to the other side

-4x-4+4=-16+4

-4x=-12

divide both sides by -4 to get x by itself

-4x/-4=-12/-4

x=3

answer:

x=3

Answer:

x = 3

Step-by-step explanation:

4( x - 1) =8

4x - 4 = 8

   + 4  + 4

4x = 12

x = 3

8 ( x - 2 )

8 ( 3 - 2 )

24 - 16

= 8

what do i do cause this is wrong and it is also wrong switched around!!!! pls help meh i will give brainleist

Answers

Answer: It seems like you're correct, maybe try switching the numbers around if you haven't done so.

When it's say "find the product _ and _, you'll basically be writing a multiplication expression as your answer.

Please answer quick! Will give Brainliest, 5 stars, and I will like your answer!!

Answers

Answer:

T' (4, 0)

there you go

Answer:

I'm pretty sure it is (-1, -1)

Step-by-step explanation:  

The point goes left once, which is negative, and down one from that which is also negative.

Hope this helps!

factor completly 108-3x^2​

Answers

The fully factored polynomial is −3(x−6)(x+6).

9 would be the answer to this question

Yolanda deposited $2,130 into an account. She made no additional deposits or withdrawals. Yolanda earned 4.25% annual simple interest on the money in the account.



What was the balance in dollars and cents in Yolanda's account at the end of 4 years

Answers

Answer:

$2492.10

Step-by-step explanation:

Deposit amount = $2130Interest rate = 4.25% annual simpleTime = 4 years

Balance at the end of 4 years:

$2130*(1 + 4*0.0425) = $2492.10

which operation will solve the following word problem? Sydney needs to double a cookie recipe,the recipe calls for 2/12 cups of flour,how much flour will she need to double the recipe?

subtraction

multiplication

division

addition​

Answers

Multiplication because you are going to multiply the recipe by 2 to double it.

Answer:

multiply by 2 to double something

find the sum of -38 + (-57)

Answers

Answer: 19

Step-by-step explanation:

Solution:

[tex]( - 38) + ( - 57) \\ = - 95[/tex]

Answer:

-95

Rewrite in simplest terms: -2(9t-3)-10t

Answers

Answer:

- 28t + 6

Step-by-step explanation:

-18t + 6 - 10t

- 28t + 6

. Casey took 25 tests in 135 days. At this rate, in how many days will she take another 10 tests? You may use the ratio table below to help.

Answers

Answer rounded by nearest thousand

1.085

Answer rounded by nearest day

2

Step-by-step explanation:

25/135

          make into a unit fraction

0.185/1

            multiple by ten

1.85/10

y + 2 = -3(x - 4). What is the point given?

Answers

The slope is given by
4
Explanation:
Writing your equation in the form
y
+
2
=
4
x

8
adding

2
so
y
=
4
x

10
and
y
'
(
x
)
=
4

Ramon earns $1,625 each month and pays $53.80 on electricity. To the nearest tenth of a percent, what
percent of Ramon's earnings are spent on electricity each month?
Ramon spends
% of his earnings on electricity each month.

Answers

Answer:

3.1%

Step-by-step explanation:

53.80/1625 x 100 is 3.1

Hope this helps plz hit  the crown ;D

So what you can do is divide 53.10 by 1735 to get percentage

0.0306051873 is your decimal, so move it right 2 places to get

3.06% of his money.

You asked for the nearest 10th of a percent, so you round that to

3.1%

Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Step-by-step explanation:

b because it's bbbusjsjs

Help please I appreciate

Answers

Step-by-step explanation:

RS=25

QR=45

RT=50

QS=70

RU=75

QT=95

Adam biked 6 3/4 miles to work and then 3 2/5 miles to the store. How many miles had he biked that day when he arrived at the store

Answers

Answer:

6 + 3 + 1.15 = 10.15 miles

Step-by-step explanation:

please answerrrrr!!! im soo confused!!!

Answers

Answer:

97%

Step-by-step explanation:

If you get 100% on a test, you got all the answers correct.

It doesn't matter how many questions there are. If you got all of them correct, you get 100%.

What if you have 100 questions on a test?

If you got 85 questions correct, on a 100 question test, your grade would be 85%.

If you got 35 questions correct, on a 100 question test, your grade would be 35%.

If you got 98 questions correct, on a 100 question test, your grade would be 98%.

If you count 100 trees, and 97 of them were evergreen, the percentage of trees that are evergreen would be 97%.

50 Points!!!!
In the following triangle BD is a median.

Find x and the measure of CD.

Answers

ure only giving 25 points and saying 50 lol
20-1
19
19+1
20

Answer:x=24

CD= just 7

Step-by-step explanation:

Can you help me with this question please

Answers

i hope i helped you :)

HELP! WILL GIVE BRANLIEST!

Answers

Answer:

44.71 kilometers

Step-by-step explanation:

Answer:

I would say 44.71 kilometers

Step-by-step explanation:

When you add all those values together you get 44.71.

Anybody can help me with this one?

Answers

The point would be (9,1)

Answer:

look pic

Step-by-step explanation:

the -1/4 is the slope and 5 is where you start

What is the product of -9.56 x 8.5? A. -81.26 B. -73.06 C. 81.26 D. 73.06

Answers

Answer:

A -81.26

Step-by-step explanation:

Answer:

The answer is, A.) -81.26!

Step-by-step explanation:

I got it right on the test. Please mark me branliest!

A. √

B. ×

C. ×

D. ×

SOMEONE PLEASE HELP MEEEEE!!!!!
The Venn diagram represents the Quantum Physics High School student body. Circle A represents all students enrolled in extracurricular activities. Circle B represents all female students. There are 117 female students enrolled in extracurricular activities, and the enrollment of the high school is 1,000 students. There are 450 male students. How many female students are not enrolled in extracurricular activities?

A.
117
B.
433
C.
550
D.
883

Answers

Answer:

total population of school = 1000

1000 - 450 males = 550 female students

550 - 200 females not in extra curriculars = 350 females in extra curriculars

350 + 90 males in extra curriculars = 440 total in extra curriculars

Circle A = 440

Circle B - overlap = 200 females not in extra curriculars

440 + 200 = 640

1000 - 640 = 370 students represented by the portion of the Venn diagram not in either circle

Step-by-step explanation:

Answer:

Its a

Step-by-step explanation:

The side length of an equilateral triangle is 4X +2 which expression represents the perimeter of the triangle

Answers

Answer:

12x + 6

Step-by-step explanation:

perimeter equals the sum of all sides

if each side is 4x+2 then 3(4x+2) = 12x+6

Answer this and I will make your day better just watch!!!!

Answers

Answer: :) hi! <3

Step-by-step explanation:

Solve the following system of equations.
5x+4y = 10
5x + 8y = 30

Answers

Answer:

(-2, 5), x = -2, y = 5

Step-by-step explanation:

When x = -2 and y = 5 on both equations, the equations become true.

What is the domain and range of y=1/x?
No answer necessary, I just want to remove points.

Answers

Answer:

ok thanks

Step-by-step explanation:

Answer:

Step-by-step explanation:

thanks for the points

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