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
alisha [4.7K]
3 years ago
9

Suppose IQ scores are normally distributed with mean 100 and standard deviation 10. Which of the following is false?

Mathematics
1 answer:
Trava [24]3 years ago
7 0

93Answer:

C. An IQ score of 80 is more unusual than an IQ score of 120

is the false answer

Step-by-step explanation:

Firstly we need to find the probability of the test score to be less than 90(P<90) then we will continue finding the probability of the IQ score to be between 90 and 110(90<P<110) then we find the probability of the IQ score being more than 110 (P>110).

For P<90

Firstly we compute this using a scientific calculator where we choose the stat option and enter the mean of 100 and a standard deviation of 10, so we check if we make the normal random variable(X) to be 90 the outcome or answer for that is 0.16 so now we know the probability of the IQ score to be less than 90 is 16% chances.

For 90<P<110

then we check with the same method what will be the probability for an IQ score to be between 90 and 110 for a mean of 100 and a standard deviation of 10 we again check a normal  random variable(X) of 110 to see what will be the probability of P<110 which we find an answer of 0.84 which is 84% chances so now therefore the probability of an IQ score to be more than 110 is 0.

therefore this tells us an IQ score of 120 is more unusual than an IQ score of 120.

You might be interested in
HELP URGENTLY PLEASE
antiseptic1488 [7]

here's the coordinates

b'= (4,5)

c'= (5,3)

4 0
1 year ago
Hurry please thank u if u answer​
AlekseyPX

Answer:

92

Step-by-step explanation:

<C = 180 - 140 = 40 deg

180 = 40 + 2x + (x+2)....... x= 46

<B = 2x = 2*46 = 92 deg ans

6 0
3 years ago
The decimal expansion of the number 2 1 / 2​
Molodets [167]

Answer:

{ \tt{ = 2 \frac{1}{2} }} \\  \\   =  \frac{5}{2}  \\  \\ { \tt{ = 2.5}}

4 0
3 years ago
Determine whether each mapping represents a function. Explain your reasoning.
FinnZ [79.3K]

Answer:

The first picture is a function and the second picture is not.

Step-by-step explanation:

Reason - In the first picture, there is no repeating value of x. In other words, every x value has a y value. However, in the second picture, the x value, 2 goes to 2 and -3.

4 0
3 years ago
8. A right cone has a volume of 8,579 m3 and a radius of 16 m. Find its altitude.
Monica [59]

Answer:

Option A is correct.

Step-by-step explanation:

The formula used for finding the volume of right cone is:

Volume of Right cone = (1/3)π.r².h

We need to find altitude i.e h

Volume of cone=V = 8579 m^3

Radius=r = 16m

Altitude =h =?

Putting values,

8579 = (1/3) * 3.14 * (16)^2*h

8579 = 1/3 * 3.14 * 256 *h

8579 = 267.95 * h

=> h = 8579/267.95

h = 32.0 m

So, Altitude of right cone is 32.0 m

Option A is correct.

4 0
3 years ago
Other questions:
  • Last year, Susan opened an investment account with $6800 . At the end of the year, the amount in the account had decreased by 6.
    15·1 answer
  • The following graph represents the hourly commission of a home appliance salesperson, y, based on the number of salespeople that
    14·1 answer
  • Write an expression to represent the total cost of paint at a rate of $5.75 per ft.? to paint a triangular-shaped mural where th
    7·1 answer
  • Organization is the key to an effective speech. Proper organization allows for a logical flow of words and ideas in a speech, ma
    12·1 answer
  • What are the two consecutive whole. Numbers that the quotient for 42 divided by 9 is between?
    13·1 answer
  • Tyler's bag of shells weighs 4.97 pounds. He finds 2 stones that weigh the same as each other and adds them to the bag. Tyler's
    9·1 answer
  • Solve x-34=78 find the value of x
    9·2 answers
  • Jamie can jog miles in 20 minutes. What is her average speed in miles per hour?
    5·2 answers
  • WILL MARK BRANLIEST:)))
    11·1 answer
  • The midpoint of AB is M(-2, -1) If the coordinates of AA are (-7, 2) what are the coordinates of B?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!