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
Naily [24]
3 years ago
7

In a particular year, the mean score on the ACT test was 22.5 and the standard deviation was 5.3. The mean score on the SAT math

ematics test was 526 and the standard deviation was 101. The distributions of both scores were approximately bell-shaped. Round the answers to at least two decimal places.
Mathematics
1 answer:
RideAnS [48]3 years ago
7 0

Question is incomplete ; The questions solved were picked from similar questions but different parameters. However, the solution pattern are exactly the same.

Answer:

- 0.0943

- 0.386

30.185

Step-by-step explanation:

Given :

ACT:

Mean score, m = 22.5

Standard deviation, σ = 5.3

SAT :

Mean score, m = 526

Standard deviation, σ = 101

1.)

Zscore for ACT score of 22:

Since the distribution is normal ; we use the relation ;

Zscore = (score - mean) / standard deviation

Score = 22

Zscore = (22 - 22.5) / 5.3 = - 0.0943

B.)

Zscore for SAT of 487

Zscore = (score - mean) / standard deviation

Score = 487

Zscore = (487 - 526) / 101 = - 0.386

C.)

ACT score, for ACT Zscore of 1.45

Zscore = (score - mean) / standard deviation

ZScore = 1.45

1.45 = (score - 22.5) / 5.3

1.45 * 5.3 = (score - 22.5)

7.685 = score - 22.5

Score = 7.685 + 22.5

Score = 30.185

You might be interested in
-2w - 5w it wont let me submit it as=is so i am typing random things.
Fofino [41]
The answer would be -7w
8 0
3 years ago
How do you solve for x in similar triangles​
amid [387]
You set the corresponding sides equal to each other and solve for x as you would in a normal equation
6 0
3 years ago
Read 2 more answers
Lydia graphed ΔXYZ at the coordinates X (0, −4), Y (2, −3), and Z (2, −6). She thinks ΔXYZ is a right triangle. Is Lydia's asser
katrin [286]

Answer:

Option (4)

Step-by-step explanation:

Vertices of the triangle are X(0, -4), Y(2, -3) and Z(2, -6).

Slope of XY (m_{1}) = \frac{y-y'}{x-x'}

                            = \frac{-3+4}{2-0}

                     (m_{1}) = \frac{1}{2}

Similarly, slope of XZ (m_{2}) = \frac{-6+4}{2-0}          

                                   (m_{2}) = (-1)

m_{1}\times m_{2}=-\frac{1}{2}

Which should be (-1) if XY and XZ are perpendicular to each other.

Now we can say that XY and XZ are not perpendicular.

Therefore, Lydia's assertion that ΔXYZ is a right triangle is not correct.

Option (4) will be the answer.

5 0
3 years ago
The difference between a number and 22 is 57. what is the number
Ksju [112]

Answer:

79

Step-by-step explanation:

The difference between 79 and 22 is 57. 79 is THE number. All you have to do is add 22 and 57 because the answer you get would ALWAYS have one of the numbers added as the difference.

5 0
3 years ago
Read 2 more answers
If AC= 8x-14 and EC = 2x + 11, solve for x.
raketka [301]

Step-by-step explanation:

AC= 8x-14

AC+14=8x

x=(AC+14)÷8

EC=2x+11

EC-11=2x

x=(EC-11)÷2

4 0
2 years ago
Read 2 more answers
Other questions:
  • Jacob made a circle-shaped poster for his geometry class.
    5·1 answer
  • Which of the following points are on the line given by the equation y equals 2x?
    14·1 answer
  • ⚡️⚡️⚡️⚡️⚡️⚡️⚡️⚡️⚡️⚡️⚡️⚡️
    7·2 answers
  • Keisha bikes 5 miles on monday and m miles on tuesday. write two equivalent expressions for the total number of miles she bikes
    13·1 answer
  • Will give brainliest!
    6·2 answers
  • You work at a sporting goods store and make commissions on the products you
    9·1 answer
  • A right triangle has the following vertices (7,-3), (4,-3), (4,9) find the area of a right triangle
    7·2 answers
  • What is the measure of angle U?<br> A. 35°<br> B. 45°<br> C. 100°<br> D. 180°
    15·2 answers
  • Which is the correct answer​
    12·1 answer
  • Please help!!! Write 4x^2=12 in standard form?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!