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
You just started working for a company, where should you first look to find a confidentiality policy concerning the information
olasank [31]
It would be D because ur an employee and u need a handbook to see what ur handelling
4 0
3 years ago
HELP ASAP!! LOTS OF POINTS!! WILL MARK BRIAN-LIST
KiRa [710]

Answer:

LSA = 532 yds ^2

Step-by-step explanation:

We do not add the triangles in because they are the bases and the bases do not get added in the lateral surface areas.

From left to right

Rectangle 1

A = lw = 9.9 *20 =198

Rectangle 2

A = lw = 6.8 *20 =136

Rectangle 3

A = lw = 9.9 *20 =198

Add them together

198+136+198

532

LSA = 532 yds ^2

7 0
3 years ago
The Cost of producing n items is given as C = 5 + 2n, where 5 is initial cost and 2 is a cost per item. Profit is given as P = 3
aleksandrvk [35]
P=5 and initial to the 3 price
4 0
3 years ago
Can someone please help?
puteri [66]

Answer:

1)Alternate exterior

2) corresponding

3) alternate interior

4) non of these

Mark me brainliest

6 0
3 years ago
A woman sold a sari for Rs 1960 at a profit of 20% At vbal price should she self: 30 gain 15562​
egoroff_w [7]
I can answer it but what’s the end part 15562
6 0
2 years ago
Other questions:
  • What is the calculator display for 5/12
    14·2 answers
  • A cable 20 feet long connects the top of a flagpole to a point on the ground that is 16 feet from the base of the pole. How tall
    13·1 answer
  • Convert 246 tablespoons to teaspoons [1tbsp=3tsp]
    12·2 answers
  • Jai bought a helmet and a pair of skates.
    8·1 answer
  • In all, 1000 students took a statistics exam worth 150 points. The first quartile (or Q1) for all 1000 scores is 90 points. Abou
    14·2 answers
  • Ryker wants a new car. The dealership offers him a loan at 9% annual interest for 6 years. If Ryker wants to do some calculation
    12·1 answer
  • What is the equation of the following line? Be sure to scroll down first to see all answer options. A. y = - x B. y = x C. y = -
    10·1 answer
  • K² = 76<br><br>What is the answer?​
    8·2 answers
  • A line passes through the point (-8,8) and has a slope of 5/4. Write the equation in slope- intercept form.
    5·2 answers
  • Company XYZ closed at ​$46.07 per share with a​ P/E ratio of 16.66. Answer the following questions.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!