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
kondaur [170]
2 years ago
15

Which of the following scores has the better relative position ( as measured by the z score) a. A score of 53 on a test for whic

h the sample mean is 50. b. A score of 230 on a test for which the sample mean is 200. c. A score of 480 on a test for which the sample mean is 400. d. Cannot be determined with the information provided.
Mathematics
1 answer:
Kisachek [45]2 years ago
3 0

Answer:

d. Cannot be determined with the information provided.

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Finding the better relative position:

The score with the better relative position is the one with a higher z-score.

To find the z-score, the mean and the standard deviation is needed, and in this question, the standard deviation is not given, and thus, the correct answer is given by option d.

You might be interested in
Does -cos(120)=cos(-120)?
Step2247 [10]
No, -Cos(120) is equal to 5, while Cos(-120) is equal to -5.

Hopefully this helps!
6 0
3 years ago
Read 2 more answers
If f(x)=square root of 1/2x -10+3 which inequality can be used to find the domain of f(x)?
zlopas [31]
Hello :
f(x) = <span>√(0.5x-10) +3

</span>inequality can be used to find the domain of f(x) is :  0.5x-10 <span>≥ 0  
</span>0.5x ≥10
x ≥10/0.5
x ≥ 20

the domain of f(x) is :  D = <span>[</span><span>20 ; + ∞[ </span>
7 0
3 years ago
Read 2 more answers
a line segment with points p(1 2) and q(4 3) is reflected across the line y=x. What are the new coordinates of the points of the
katen-ka-za [31]

Answer:

The new coordinates of the points of the line segment are p'(2,1) and q'(3,4)

Step-by-step explanation:

we know that

When you reflect a point across the line y= x, the x-coordinate and y-coordinate change places.

so

The rule of the reflection of a point across the line y=x is

(x,y) -----> (y,x)

we have

Points p(1,2) and q(4,3)

Applying the rule of the reflection across the line y=x

p(1,2) ------> p'(2,1)

q(4,3) -----> q'(3,4)

therefore

The new coordinates of the points of the line segment are p'(2,1) and q'(3,4)

3 0
3 years ago
What is the minimum cuts<br> needed to cut a circle into 8<br> equal parts?
Gnom [1K]

What is the minimum cuts  needed to cut a circle into 8  equal parts ?

A : 4 cuts

7 0
3 years ago
Read 2 more answers
For a 30 sided polygon, what is the degree of rotation?
ratelena [41]


interior angle of n-gon formula: 180 - ( 360 / n) 
a 30 sided polygon, so in this case n = 30
so
interior angle = 180 - ( 360 / 30) 
interior angle = 180 - 12
interior angle =  168

answer
168 degrees
3 0
3 years ago
Read 2 more answers
Other questions:
  • 2.) a. If you rotate an object 180 degrees clockwise or counterclockwise, using the same center, is the image the same in both c
    6·1 answer
  • Graph the equation −2y+12=−3x
    12·2 answers
  • Solve the equation by factoring. 15=8x^2-14x
    8·2 answers
  • Please answer fast !!!
    9·1 answer
  • If you flip two coins 96 times what is the best prediction for the number of times they would both land on tails
    10·1 answer
  • Which of these equations has NO solution
    8·1 answer
  • Find volume of cone z=sqrt(x^2+y^2) that is bounded with z=5 and z=7
    8·1 answer
  • Help plsss for brainliest
    5·1 answer
  • What is the volume of the sphere? 20 "!!points!!" and who gets it right first gets the brainliest.
    10·2 answers
  • Your family goes to a restaurant for dinner. There are
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!