Answer:
-2
Step-by-step explanation:
rise over run

Answer:
I believe the answer is 7inches I did 175 ÷ 25=7 since 1in. equals 25 mi. it equals 7 inches
Step-by-step explanation:
Answer:
The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence interval
, we have the following confidence interval of proportions.

In which
z is the zscore that has a pvalue of
.
is the margin of error.
95% confidence interval
So
, z is the value of Z that has a pvalue of
, so
.
We have that:

So





The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.