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
Alisiya [41]
3 years ago
15

If you were to randomly survey 50 people from the phone books of 20 randomly chosen cities, would this be a random sample? Why o

r why not?
Mathematics
2 answers:
Sever21 [200]3 years ago
7 0

Answer:

It would not be a random fair sample, as the sample categories each should be 30 minimum for such sample tests to be effective. There are 20 cities so the maximum any category group can be sampled is 3 per city and 2 from other cities as 50/2 = 25 = 2.5 each. Therefore by having data from other cities this creates 20 other categories as the samples are based on geographic wider scale such survey would require 30 from each city to show effectiveness and it would require reliable data of 30 from from each city instead of 2-3 each city.

Step-by-step explanation:

kotegsom [21]3 years ago
3 0

Answer:

no.

Step-by-step explanation:

The survey has too small of a group to be random.

You might be interested in
How to solve -5y-y=1
goldenfox [79]
Since both y’s are negative you can combine them to make -6y=1 then you divide -6 on each Side to get y=6
5 0
3 years ago
Read 2 more answers
Please help. Could you explan your answer also? thanks
natulia [17]
Answer: Choice B) -4

The lower quartile, also known as Q1 or the first quartile, is the left edge of the box. In this case, that is at -4. We can drop a vertical line from the left edge of the box until we hit -4 on the number line. 

Side Note: 25% of the data values are below Q1, while 75% of the data values are above Q1
4 0
4 years ago
Is -2/3(12b - 6 + 9b - 18) equivalent to 2b(b + 8)? Show your work.
AURORKA [14]

Answer:

No, they are not equivalent

Step-by-step explanation:

\frac{-2}{3}(12b - 6 + 9b - 18) = \frac{-2}{3}(12b + 9b - 6 - 18)\\\\=\frac{-2}{3}(21b - 24)\\\\  = \frac{-2}{3}*21b -24*\frac{-2}{3}\\\\= -2*7b + 8*2\\\\= 2( -7b + 8)

8 0
3 years ago
Read 2 more answers
A serving of rice is 1/3 of a cup. How many servings are there in a 2 1/3-cup bag of rice?
iogann1982 [59]

Answer:

7

Step-by-step explanation:

each cup is 1/3 so divide 2 1/3 by 1/3 to get 7 cups

hope this helps

6 0
3 years ago
Robert, a ninth-grader, has just been told, "The reason you’re having so much trouble with division is that you have never maste
Brums [2.3K]

Answer:

Diagnostic

Step-by-step explanation:

The teacher made a diagnostic decision relative to Roberts skill level. Before she made this decision, she first started with the process of evaluation to know his strength and also establish his weakness. With the knowledge she has gotten she now plans to him with meaningful learning and an efficient curriculum that would help him in mastering multiplication first before division.

7 0
3 years ago
Other questions:
  • The owner of Boston sports bar believes that, on average, her restaurant is busier on days when the Red Sox play an away game (a
    10·1 answer
  • Solve the inequality below for x. -3.2(2x-1) less than or equal to 17.6
    9·2 answers
  • Please help me on one math question thanks !
    10·2 answers
  • What is the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the point (−4,
    13·2 answers
  • How many centimeters are there in 3.5 inches?<br> 1 inch = 2.54 cm
    12·2 answers
  • Marc throws a ball out of a second story window The path of the ball is shown on the graph
    5·1 answer
  • Identify the following number as rational or irrational 3.2573820193748...
    13·1 answer
  • In ΔLMN, l = 8.7 cm, m = 2.3 cm and n=6.6 cm. Find the measure of ∠M to the nearest degree.
    14·2 answers
  • Please help I need for tonight thanks
    9·1 answer
  • If K is the midpoint of ER, EK = z+5,and ER=4x+2,What is the length of K R?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!