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
irinina [24]
3 years ago
9

True or False: The proportion of the population that has certain characteristics is the same as the probability that a randomly

selected individual of the population has these same characteristics.
Mathematics
1 answer:
atroni [7]3 years ago
8 0

Answer:

True

Step-by-step explanation:

You might be interested in
I NEED HELP ASAP Use the Law of Detachment or the Law of Syllogism to draw a conclusion. 3. If Shauna is early for her meeting,
yuradex [85]
W = Shauna wakes up early
M = Shauna is early for her Meeting
P = Shauna gains a promotion

1. M -> P
2. W -> M
3. W
: . P
6 0
3 years ago
**WILL GIVE THE BRAINLIEST! & LIKE**
Alecsey [184]

Answer:

n = -2

Step-by-step explanation:

add 7 to both sides

1+8n = -15

subtract 1 from both sides

8n = -16

divide both sides by 8

n = -2

8 0
3 years ago
Read 2 more answers
Factor by grouping.......
Gekata [30.6K]

Answer:

A. (7n-1) (8n-1)

Step-by-step explanation:

56n^2 -8n-7n+1

56n^2 -8n       -7n+1

Factor out 8n from the first group   and -1 from the second group

8n (7n-1)     -1(7n-1)

Factor out the (7n-1)

(7n-1) (8n-1)

7 0
3 years ago
Principal Zimmer wants to make sure that students have enough time to get across campus between classes. To see how long it take
Len [333]

Answer:

the answers is step 3

Step-by-step explanation:

i took the test

7 0
3 years ago
The random variable x has the following probability distribution: x f(x) 0 .25 1 .20 2 .15 3 .30 4 .10 a. Is this probability di
Reptile [31]

Answer and Explanation:

Given : The random variable x has the following probability distribution.

To find :

a. Is this probability distribution valid? Explain and list the requirements for a valid probability distribution.

b. Calculate the expected value of x.

c. Calculate the variance of x.

d. Calculate the standard deviation of x.

Solution :

First we create the table as per requirements,

x      P(x)         xP(x)           x²            x²P(x)

0    0.25           0               0                0

1     0.20        0.20             1              0.20

2    0.15          0.3               4             0.6

3    0.30         0.9               9             2.7

4    0.10          0.4               16             1.6

   ∑P(x)=1     ∑xP(x)=1.8               ∑x²P(x)=5.1

a) To determine that table shows a probability distribution we add up all five probabilities if the sum is 1 then it is a valid distribution.

\sum P(X)=0.25+0.20+0.15+0.30+0.10

\sum P(X)=1

Yes it is a probability distribution.

b) The expected value of x is defined as

E(x)=\sum xP(x)=1.8

c) The variance of x is defined as

V=\sum x^2P(x)-(\sum xP(x))^2\\V=5.1-(1.8)^2\\V=5.1-3.24\\V=1.86

d) The standard deviation of x is  defined as

\sigma=\sqrt{V}

\sigma=\sqrt{1.86}

\sigma=1.136

5 0
3 years ago
Other questions:
  • What is 5/6 - 5/54 in simplest form
    9·1 answer
  • Lester baked 36 cookies with 4 scoops of flour. How many scoops of flour does Lester need in order to bake 45 cookies? Solve usi
    8·1 answer
  • What is 0.212121 written as a fraction?
    8·2 answers
  • Imagine you have to deliver a speech on independence day prepare a speech​
    10·1 answer
  • What two integers is cube root of -64 between?
    6·1 answer
  • Find the LCM of 12, 15, 18
    15·1 answer
  • 1. y-23=55 2. x-14= -8
    11·1 answer
  • sophia used 1/10 of a liter of water to fill 1/4 of a fish aquarium. How much water, in liter is required to fill the aquarium?​
    12·1 answer
  • Ayúdenme porfavor es para mi tarea ​
    7·1 answer
  • (3n-2)(4n+1)<br> how do i solve this by factoring?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!