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
lesya [120]
2 years ago
11

True or False

Mathematics
1 answer:
horrorfan [7]2 years ago
5 0

For example, a classroom of 30 students with 15 males and 15 females could generate a representative sample that might include six students: three males and three females

so true i think

You might be interested in
Of the population of all fruit flies we wish to give a 90% confidence interval for the fraction which possess a gene which gives
maks197457 [2]

Answer:

The margin of error for the 90% confidence interval is of 0.038.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

To this end we have obtained a random sample of 400 fruit flies. We find that 280 of the flies in the sample possess the gene.

This means that n = 400, \pi = \frac{280}{400} = 0.7

90% confidence level

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

Give the margin of error for the 90% confidence interval.

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

M = 1.645\sqrt{\frac{0.7*0.3}{400}}

M = 0.038

The margin of error for the 90% confidence interval is of 0.038.

8 0
3 years ago
Hey can someone please help explain and answer this 1 question. There's a picture. Thank you!
zmey [24]
//You can substitute some values in to find out, for example (1, -5) and (5, -5) are good.
Using this method, you can deduce that it would be A
3 0
3 years ago
The radius of the aluminum (Al) atom is 143 pm. The radius of the aluminum ion (Al3+) is 54 pm. By what percentage did the radiu
Romashka [77]

Answer:

There was 62.23% change in radius as the ion formed.

Step-by-step explanation:

6 0
3 years ago
Write in standard form 4,000,000+3,000+50+2
Andreas93 [3]
4,003,052 is the answer to the problem
7 0
3 years ago
Read 2 more answers
Which of the following represent the solution to a system of linear equations on graph
Sladkaya [172]
The answer is the last choice, the points the lines intersect.
7 0
3 years ago
Other questions:
  • Need help with this....
    13·1 answer
  • PLS HELP WILL MARK BRAINLIEST
    14·2 answers
  • 16 POINTS
    10·1 answer
  • 14.1-191<br> Is this the answer?
    12·2 answers
  • Pls be right will give brainliest :3
    11·1 answer
  • 9. An object that has traveled 400 km in 50 hours, what was the average speed?
    8·1 answer
  • Find the m2.
    6·1 answer
  • True or false dilations always increase the length of time segments ​
    11·1 answer
  • The temperature was -25 degrees and rose 18 degrees. Which ADDITION equation correctly represent this situation?
    7·2 answers
  • Please help me! I will give brainly!<br><br>Asapppppp
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!