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
EastWind [94]
3 years ago
5

Iq scores are normally distributed with a mean of 100 and a standard deviation of 15 what is the probability that a randomly sel

ected person has an iq above 126
Mathematics
1 answer:
a_sh-v [17]3 years ago
6 0
So we are given the mean and the s.d.. The mean is 100 and the sd is 15 and we are trying the select a random person who has an I.Q. of over 126. So our first step is to use our z-score equation:

z = x - mean/s.d.

where x is our I.Q. we are looking for

So we plug in our numbers and we get:

126-100/15 = 1.73333

Next we look at our z-score table for our P-value and I got 0.9582

Since we are looking for a person who has an I.Q. higher than 126, we do 1 - P. So we get

1 - 0.9582 = 0.0418

Since they are asking for the probability, we multiply our P-value by 100, and we get 

0.0418 * 100 = 4.18%

And our answer is

4.18% that a randomly selected person has an I.Q. above 126
Hopes this helps!
You might be interested in
Identify the identity function: f(x) = 5 and f(x) = x​
pantera1 [17]

Answer:

what is Hindu Arabic number xxv

8 0
3 years ago
If the bakers percentage for raisins in a raisin bread formula is 8% and the bakers percentage for flour is 100%, what amount of
a_sh-v [17]
How many pounds were the 8% formula?
4 0
3 years ago
Read 2 more answers
What property is shown in the following equation?<br><br> 17 + 8 + 3 = 17 + 3 + 8
ss7ja [257]

Answer:

The Commutative Law of Addition.

Step-by-step explanation:

Basically, this law says we can swap numbers over and still get the same number when we add. This has demonstrated exactly that.

Hope this helped!

3 0
3 years ago
Read 2 more answers
Distribute <br>(x-6)(x-7)<br><br>a) x^2-13x-15<br>b) x^2-13x+42<br>c) x^2+x+42<br>d) x^2+x-15​
Sidana [21]

Answer:

B. x² - 13x + 42

Step-by-step explanation:

7 0
2 years ago
Which of the following inequalities matches the graph?
Neko [114]

Answer:

c

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is another way to write the absolute value inequality |p|&lt;_12?
    9·2 answers
  • Other ways to express 10^4
    14·1 answer
  • What are the coordinates of a point that is 3 left of the the y axis and 5 above the x axis
    14·2 answers
  • The answer is not 25,000,000.<br> I'm so Confused<br> ASAP
    15·1 answer
  • Evaluate, 2 x (390 - [5 x (10 - 4 divided by 2)] + 15) x 2= ?
    6·2 answers
  • The scale on a highway construction drawing is 0.5 inches for every 45 miles. If the drawing shows the highway is 4 inches long,
    8·1 answer
  • Which two angles in the figure are obtuse angles?
    11·1 answer
  • It cost $2.50 to rent bowling shoes. Each game costs $2.25. You have $9.25. Write and solve an equation to find how many game x
    5·1 answer
  • Could someone please check my answer and explain? im not sure if im doing this right
    15·1 answer
  • A farmer plants a new type of corn and wants to quickly determine the yield, or total number of ears of corn, for the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!