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
const2013 [10]
3 years ago
8

1. All of the following are true except B. A. A random variable represents a numerical value assigned to an outcome of a probabi

lity experiment. In most applications, discrete random variables represent counted data. C. In most applications, continuous random variables represent measured data. D. The expected value of a discrete random variable is equal to the standard deviation of the random variable.
Mathematics
1 answer:
kolezko [41]3 years ago
6 0

Answer:

The true statements are :

A. A random variable is a numerical description of the outcome of a statistical experiment.

B. In most​ applications, discrete random variables represent counted​ data.

C. In most applications, continuous random variables represent measured data.

Step-by-step explanation:

It is true statement that,

A. A random variable is a numerical description of the outcome of a statistical experiment.

B. In most​ applications, discrete random variables represent counted​ data.

C. In most applications, continuous random variables represent measured data.

The false statement is -

D. The expected value of a discrete random variable is equal to the standard deviation of the random variable.

Reason -

The mean value, or expected value, of a discrete random variable X is given by the following equation:

μ = E(x) = ∑ x p(x)

And

The variance of a discrete random variable is given by the following formula:

σ²=∑ (x−μ)² P(x)

And

The square root of the variance, or, in other words, the square root of σ², is the standard deviation of a discrete random variable :

σ = √σ²

You might be interested in
What is the volume of the fuigure.​
Elanso [62]

Answer:

volume = 504

Step-by-step explanation:

the basic formula for volume is length × width

14 x 3 x 3 x 2 x 2 = 504

4 0
2 years ago
Please Help!!! I need -14+6=-8 in a addition sentence​
padilas [110]

Step-by-step explanation:

megan owes the bank 14 dollars, but she then deposits 6 dollars. she now owes the bank 8 dollars

6 0
2 years ago
3.2a - 16 = 4a<br> Solve
KengaRu [80]

Answer:

a= -20

Step-by-step explanation:

3 0
3 years ago
What is the mean height 81,88,69,65,87
Sauron [17]

Answer:

78

Step-by-step explanation:

add them all together and and divide by how many they are -thats the meaning of the mean

81+88+69+65+87=390

390divide by 5=78

i divided by 5 becasue there are 5 numbers

4 0
2 years ago
ASAP! NEED HELP!!!<br> ACTUALLY USA TESTPREP BUT STILL. PLEASE HELP!
Rus_ich [418]
What is the length of the longest lead? 1 3/4 

What is the length of the shortest lead? 1/4 

What is the difference between the longest lead and the shortest lead? 1 1/2

What size lead did most students have? 1/2

What was the sum of the two shortest lead lengths? 3/4

What was the difference between the second shortest and the longest lead? 1/4




8 0
3 years ago
Other questions:
  • Find the transition matrix from B to B'. B = {(-1,2), (3, 4)), B' = {(1, 0), (0, 1)} STEP 1: Begin by forming the following matr
    14·1 answer
  • heather's weekly pay is directly proportional to the number of hours she works at the record store.Her pay is $174 for 24 hours
    11·1 answer
  • Please answer this i am literally THE WORST AT ALGEBRA!!!
    11·2 answers
  • If the volume of the square pyramid is 40 cubic millimeters, and the length of s is 2 millimeters, what is the length of the alt
    7·2 answers
  • Write a quadratic function that represents a parabola that opens upward and has x-intercepts (-8,0) and (-1,0)
    8·1 answer
  • Find the midpoint of the segment with the following endpoints. (7,-6) and (4, -10)​
    12·1 answer
  • 72:56:120 in to the simplest form
    5·1 answer
  • 12 Hours
    9·1 answer
  • Find m∠U.<br> Write your answer as an integer or as a decimal rounded to the nearest tenth.
    11·1 answer
  • LABEL THE CIRCLE BY FILLING THE BOXES WITH THE APPROPRIATE PARTS OF THW CIRCLE.<br>​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!