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
noname [10]
2 years ago
8

When we make inferences about the difference of two independent population proportions, what assumptions do we need to make

Mathematics
1 answer:
fomenos2 years ago
3 0

Answer:

Random samples

Counts of successes and failures at least 15 each for each group.

Step-by-step explanation:

For making any inferences about the differences of the two independent population proportion, we assumed that the samples are of random and the counts of the success and the failures are at least 15 each for each of the groups.

From such assumption of the randomness, the observations in the population 1 will not be affected by the observations in the population 2, and also vice versa.

The assumptions of the counts refers tot he samples from each population that are big enough to justify by the normal distribution in order to model the differences between the proportions.

Therefore the assumptions that we need to make are:

-- Random samples

-- Counts of successes and failures at least 15 each for each group.

You might be interested in
1. Sam knows that his MP3 player has 40% of its battery life left and that the battery
Korolek [52]

Complete question :

Sam knows that his MP3 player has 40% of its battery life left and that the battery

charges by an additional 12 percentage points every 15 minutes. What percent of

the mp3's battery will be charged when Sam and his family leave? If mp3 was plugged in an hour before his family plan to leave.

Answer:

88%

Step-by-step explanation:

Time before leaving = 1hour

Current percentage = 40%

Charge rate = 12% every 15 minutes

Therefore,

Charge rate per minute :

12% / 15 = 0.8% per minute

Charge recieved after one hour (60 minutes) :

0.8% * 60

= 48%

Therefore, total charge after just before leaving is:

Current percentage + percentage received

40% + 48%

= 88%

6 0
3 years ago
I have 11 ones and I am between 70 and 80. How many tens do I have? Who am I?
bija089 [108]
You’re someone that really cares about life
5 0
3 years ago
Click on the measure of the angle. 116 64 66 114​
Vesna [10]

Answer:

116 degrees.

Step-by-step explanation:

3 0
3 years ago
A quarter, a nickel, and a dime are all flipped. how many possible outcomes are there?
AlekseyPX

Possible outcomes

1. H H H

2. T T T

3. H T T

4. H H T

5. T T H

6. T H T

7. H T H

8. T H H

There are 8 possible outcomes.


6 0
3 years ago
Can you show me how to do Thisss.
frez [133]
x=0.\overline{3}\\
10x=3.\overline{3}\\
10x-x=3.\overline{3}-0.\overline{3}\\
9x=3\\
x=\dfrac{3}{9}=\dfrac{1}{3}\\\\
x=-0.\overline{2}\\
10x=-2.\overline{2}\\
10x-x=-2.\overline{2}-(-0.\overline{2})\\
9x=-2.\overline{2}+0.\overline{2}\\
9x=-2\\
x=-\dfrac{2}{9}\\\\
x=1.\overline{7}\\
10x=17.\overline{7}\\
10x-x=17.\overline{7}-1.\overline{7}\\
9x=16\\
x=\dfrac{16}{9}=1\dfrac{7}{9}

x=-2.\overline{6}\\
10x=-26.\overline{6}\\
10x-x=-26.\overline{6}-(-2.\overline{6})\\
9x=-26.\overline{6}+2.\overline{6}\\
9x=-24\\
x=-\dfrac{24}{9}=-2\dfrac{2}{3}\\\\
x=0.4\overline{6}\\
10x=4.\overline{6}\\
100x=46.\overline{6}\\
100x-10x=46.\overline{6}-4.\overline{6}\\
90x=42\\
x=\dfrac{42}{90}=\dfrac{7}{15}

x=-1.8\overline{3}\\
10x=-18.\overline{3}\\
100x=-183.\overline{3}\\
100x-10x=-183.\overline{3}-(-18.\overline{3})\\
90x=-183.\overline{3}+18.\overline{3}\\
90x=-165\\
x=-\dfrac{165}{90}=-1\dfrac{5}{6}
8 0
3 years ago
Other questions:
  • Add and simplify: 9/16 + 1/2=?
    11·2 answers
  • What is the average rate of change of the function on the interval from x = 1 to x = 2?
    7·1 answer
  • Matias solved 28 math problems in 20 minutes yesterday. Using the same rate, how many math problems can Matias solve in 90 minut
    8·2 answers
  • WILL MAKE BRAINLYEST PLEASE SOME ONE ANSWER MY QUESTION PLEASETo write the best estimate for the following product in scientific
    13·2 answers
  • 5 days equals how many hours? ​
    10·2 answers
  • When Zack checked his solution, it didn’t work. What was his mistake?
    13·2 answers
  • your friends says that an exterior angle can never be complementary to any of the interior angles in a triangle?
    14·2 answers
  • X+3=15 what’s x because I keep on getting 18 and it says I’m wrong on Pearson
    6·2 answers
  • SAT A bag contains 3 red marbles, 2 green
    8·1 answer
  • What function is graphed below???
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!