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
kozerog [31]
2 years ago
8

Fran would like to estimate the mean amount of time it takes people in her town to travel to work. The town's population is 150,

000 and about 90,000 of those are working adults.
Which statements are true?


Select each correct answer.


A. If she takes a random sample of the population of working adults in her town, the mean for that group is likely close to the mean for the entire group.


B. The population of working adults is too large for using a sample to estimate the mean of the entire group.


C. There is no way to infer the value of the mean. She must collect data for all 90,000 working adults and calculate the mean.


D. A larger sample of working adults will provide a better estimate of the true mean than a smaller sample.




You have to choose more than one
Mathematics
1 answer:
castortr0y [4]2 years ago
5 0

Answer: A,D

Step-by-step explanation: I think that it is right?

You might be interested in
When Joanne checked her work by substituting the value of the variable back into the equation, she got an answer of 12.34 = 12.3
Arada [10]
See could have got the correct answer because if there was more numbers in the decimal you can round it to get .34 or because both answers have 12.3 and it doesnt matter about the other numbers after 3
7 0
2 years ago
Read 2 more answers
Find the value of x<br> .<br><br> 12.5,−10,−7.5,x<br> ; The mean is 11.5<br> .
fomenos
There are four values, including the unknown value x. The sum of the four values is the given value of the mean, 11.5, multiplied by four. Let S be the sum of the four values. Then we can write:
S=11.5\times4=46

46=12.5 + (-10)+(-7.5)+x
x = 46 + 5 = 51
The answer is: The value of x is 51.

4 0
2 years ago
Dilly is 7 years younger than Dally. In 4 years time she will be half Dally’s age. What is the sum of their ages now?
Step2247 [10]

Answer:

<u>The sum of their ages now is 13</u>

Step-by-step explanation:

Dally's age = x

Dilly's age = x - 7

In 4 years time Dilly will be half Dally’s age, therefore:

Dilly's age plus four equals to half of Dally’s age plus four,

replacing with the values and variables we know:

x - 7 + 4 = (x + 4) /2

x - 3 = (x + 4) /2

2x - 6 = x + 4 (Multiplying by 2 at both sides)

2x - x = 4 + 6 (Like terms)

x = 10 ⇒ x - 7 = 3

<u>The sum of their ages now is 13 (10 + 3)</u>

4 0
2 years ago
What is the surface area of the regular pyramid below
Alenkinab [10]

S=14\times14+4(\frac{14}{2}\times18) \\S=196+4(7\times18) \\S=196+4\times126 \\S=196+504 \\S=\boxed{700}

5 0
2 years ago
Read 2 more answers
Quadrilateral WXYZ is on a coordinate plane. Segment XY is on the line x − 3y = −12, and segment WZ is on the x − 3y = −6. Which
Nostrana [21]

Answer:

Equation shown

Step-by-step explanation:

Eq(1): x-3y=-12

X=-12+3y

=-4+y

Eq(2): x-3y=-6

X=-6+3y

=-2+y

4 0
2 years ago
Read 2 more answers
Other questions:
  • 10 gallons and 11 quarts divided by 3
    8·2 answers
  • Which of the following values are in the range of the function graphed below? Check all that apply.
    13·2 answers
  • If x is directly proportional to y, and x = 3.4 when y = 2, find y when x = 5.1.
    6·2 answers
  • Which of the following prime factorizations represents the greatest common factor of 162, 378, and 414?
    9·2 answers
  • Jenny studied the characteristics of two species of bacteria. The number of bacteria of species A, A(t), after t hours is repres
    5·2 answers
  • A customer just paid $35,620 for a delivery van. If the percent markup based on cost is 30%, what was the cost?
    11·2 answers
  • Which two events have the same probability the spinner is divided into 8 equal sections
    14·1 answer
  • Make x the subject of the formula 6x+a=5(x+t)
    15·2 answers
  • Find the measure of x. Line PU has points R and S between points P and U, lines QR and ST are parallel, line QR intersects line
    13·2 answers
  • ZEE సినిమాలు<br>next<br>పండగ చేసో see​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!