Check the picture below.
notice, the period is the length of the part in the graph that is being repeated.
It’s 3/6 but you simplify it to 1/2
1/2 is ur answer :)
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%.
Answer:
D(t)=0.2sin(2t)+1
Step-by-step explanation:
This is the Khan Academy Answer ^V^
Which of the following expressions represents "5 less than 3 times the number m"?
3 m-5
5 m-3
<u>5-3 m</u><u> </u><u>✓</u><u>✓</u><u>✓</u>
3-5 m
<h2>Answer:</h2>
Option 3. <u>5 - 3m</u>