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
Triangle abc has side lengths ab = 65, bc = 33, and ac = 56. find the radius of the circle tangent to side ac and bc and to the
lara [203]

The radius of the circle tangent to sides AC and BC and to the circumcircle of triangle ABC.

r= 24.

<h3>What is the radius of the circle tangent to sides AC and BC and to the circumcircle of triangle ABC.?</h3>

Generally, the equation for side lengths AB is  mathematically given as

Triangle ABC has side lengths

Where

  • AB = 65,
  • BC = 33,
  • AC = 56.

Hence

r √ 2 · (89 √ 2/2 − r √ 2) = r(89 − 2r),

r = 89 − 65

r= 24.

In conclusion, The radius of the circle tangent to sides AC and BC and to the circumcircle of triangle ABC.

r= 24.

Read more about radius

brainly.com/question/13449316

#SPJ4

7 0
11 months ago
I have an 88 in my math class, according to my teacher if I get a 75% on my final exam my grade will be 86. my final exam is wha
shusha [124]

Answer:

I think the answer is 30%

8 0
3 years ago
Read 2 more answers
The number of students enrolled at a college is 15,000 and grows 4% each year
Kipish [7]

Answer:

15,000

Step-by-step explanation:

initial amount is basically the starting amount

6 0
2 years ago
The difference of 10 and the product of n and 2 is 4 which operation models this​
vagabundo [1.1K]

Answer:

10 - 2n - 4

Step-by-step explanation:

The product of n and 2 is 2n.

Then 10 - 2n is the difference of 10 and the product of n and 2.

In conclusion, we have:  

10 - 2n - 4

3 0
3 years ago
It cost Naomi $7.70 to send 154 text messages. How many text messages did she send
s2008m [1.1K]

You have to find the unit rate

SO..

7.70 / 154 = 0.05

So it cost her 0.05 cents for each text.

So then you divide $ 5.25 by the unit rate to get the number of text

5.25 /0.05 = 105

so she sent 105 text

To check it you just multiply the unit rate by the number of text you got and you show come up with $ 5.25

0.05 x 105 = 5.25

4 0
2 years ago
Other questions:
  • if a certain number x is doubled, the result is less than or equal to 12. find the range of values of the number​
    8·1 answer
  • 0.6 divided by 0.03 equal
    6·2 answers
  • Expand (5a/3 -2b/5)^3
    13·2 answers
  • How many tangents can be drawn that contain a point on a circle? Explain your answer.
    6·1 answer
  • of 140 seventh grade students, 15% earn the presidential physical fitness award. How many students earn the award
    14·2 answers
  • Write the equation of a line with a slope of-5/7 and a y-intercept of 1.​
    14·1 answer
  • Heelp i dont understand ;^;
    5·1 answer
  • How many squares will be in Figure 10?<br><br> A) 15<br> B) 43<br> C) 99<br> D) 100
    14·2 answers
  • 4.8m into centimeters
    7·2 answers
  • The height of an<br> equilateral triangle is<br> 11√12. What is a side<br> of the triangle?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!