5 Which fraction is equivalent to 20 ? N
2 answers:
You might be interested in
Answer:
The sample size is 1875.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
Sampling error of 0.03.
This means that
99.74% confidence level
So , z is the value of Z that has a pvalue of
, so
.
25% of all adults had used the Internet for such a purpose
This means that
What is the sample size
The sample size is n. So
Simplifying by 0.03 both sides
The sample size is 1875.
First you can find 
of 90.
90 x = 62
Next, you have $62 left and spent
of it. Meaning you have 
of 62 left.
62 x = about <span>53.14285
</span>
As your answer is not a whole number, you could round according to whatever guidelines your homework has given you (for example - rounding to the 2nd decimal place $53.14)
90 x
Next, you have $62 left and spent
62 x
</span>
As your answer is not a whole number, you could round according to whatever guidelines your homework has given you (for example - rounding to the 2nd decimal place $53.14)