Answer:
The sample size needed is 2401.
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 of the interval is:

95% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
Estimate the sample size needed if no estimate of p is available so that the confidence interval will have a margin of error of 0.02.
We have to find n, for which M = 0.02.
There is no estimate of p available, so we use 






The sample size needed is 2401.
Answer:
(d + 3) would be 10
Step-by-step explanation:
<u>Step 1: Distribute</u>



<u>Step 2: Subtract 13.5 from both sides</u>


<u>Step 3: Divide both sides by 4.5</u>


<u>Step 4: Determine what (d+3) is</u>



Answer: (d + 3) would be 10
Answer:
B
Step-by-step explanation:

subtract 6 from both sides

divide by 2/3(or multiply by 3/2)

and thats your answer
Answer:
She needs to divide 6 by 4.
Step-by-step explanation:
Answer:
$638.16
Step-by-step explanation:
594.99x7.25%=43.17
594.99+43.17=638.18