answer.
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
swat32
2 years ago
4

Let the random variable X represent the number of people living in a household in a certain town. The standard deviation of X is

1.8. Which of the following statements is the best interpretation of the standard deviation?
A) The number of people living in a randomly selected household is expected to be 1.8 people.
B) The number of people living in a randomly selected household will be 1.8 people away from the mean
C) On average, the number of people living in a household varies from the mean by about 1.8 people.
D) For a random sample of households, the average number of people per household is expected to be 1.8 people
E) For a random sample of households, the average number of people per household will be 18 people away from the mean.
Mathematics
1 answer:
Andreyy892 years ago
5 0

Answer:

C) On average, the number of people living in a household varies from the mean by about 1.8 people

Step-by-step explanation:

Standard Deviation is a statistical measure of magnitude of variation/ dispersion, of a set of values from the mean of the set.

Low standard deviation implies values are closer to the mean. High standard deviation implies values are far/ wide spread around the mean.

If X represents number of people living in a household in a certain town ; standard deviation reflects average level of variation around the mean people living in a household's town.

So, standard deviation = 1.8 implies : On average, the number of people living in a household varies from the mean by about 1.8 people.

You might be interested in
Mike and Jasmine have a combined age of 30. Mike is 3 years younger than twice Jasmines age. How old is Mike?
Kamila [148]
Mike is 19.

If you turn the question into an equation it turns to:
J x 2 - 3 = M

So since you don’t know Jasmine’s age you would use guess and check. 8,9, and 10 didn’t work but when you put in 11:
11 x 2 - 3 = M
22 - 3 = M
19 = M

And to check your work
J + M has to equal 30 so,
11 + 19 = 30
30 = 30
6 0
2 years ago
The area of a square can be represented by the expression x10 Which monomial represents a side of the square?
melisa1 [442]

Area\: of \: square=side^2\\x^{10}=side^2\\side=\sqrt{x^{10}}\\side=\sqrt{x^2 \times x^2 \times x^2 \times x^2 \times x^2}\\side=x \times x \times x \times x \times x\\side=x^5

8 0
2 years ago
Read 2 more answers
Anita had $400 in her savings account when she went to college. Her parents will add $200 to her account each month.
Stolb23 [73]
Anita's account had linear growth
Miguel's account had exponential growth.
Miguel's account grew faster because exponential growth is faster than linear growth
6 0
2 years ago
Read 2 more answers
Consider the conjecture that the sum of a rational number and an irrational number is ALWAYS irrational. To try to prove this co
miss Akunina [59]

Answer:

B) irrational. Since an irrational number cannot equal a rational number.  

The premise that c is rational is false

Step-by-step explanation:

The assumption that c is rational means that the difference c-a must be rational. That difference is b, so b=c-a would mean that b must be rational. But b is defined to be irrational. Since an irrational number cannot equal a rational number, a contradiction arises and the assumption that c is rational must be false. Therefore the sum (c) must be irrational. (B)

6 0
2 years ago
Read 2 more answers
A restaurant wants to study how well its salads sell. The circle graph shows the sales over the past few days. If 10 of the sala
vova2212 [387]
40%=10
80%=20
100%=25
answer is 25
5 0
2 years ago
Other questions:
  • To order tickets online to a hockey game, there is a processing fee plus the cost per ticket. The cost for 5 tickets is $174.45.
    12·1 answer
  • A rectangle is transformed according to the rule R0, 90º. The image of the rectangle has vertices located at R'(–4, 4), S'(–4, 1
    7·2 answers
  • Sue played four games of golf for these games her modal score was 98 and her mean score was 100 her range of score was 10 what w
    15·1 answer
  • Define four symbolic constants that represent integer 25 in decimal, binary, octal, and hexadecimal formats
    13·1 answer
  • An airplane, flying at a constant speed of 360 mi/hr and climbing at a 30 degree angle, passes over a point P on the ground at a
    14·1 answer
  • A machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks produced is
    6·1 answer
  • Celeste can spend no more than $30 to buy quinoa and rice. She will pay $5 per pound for quinoa and $2 per pound for rice. Which
    8·2 answers
  • Right triangle ABC and right triangle ACD overlap as shown below. Angle DAC measures 20 degrees and angel BCA measures 30 degree
    14·1 answer
  • A division of a company has over 200 employees, 40% of which are male. Each month, the company randomly
    6·2 answers
  • In quadrilateral QRST, m is 68°, m is (3x + 40)°, and m is (5x − 52)°. What are the measures of , , and ? Write the numerical va
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!