Answer:
1, 2, 3, 5, 6, 10, 15, 30
Step-by-step explanation:
Factors are numbers that can divide 30
Using the z-distribution, as we have the standard deviation for the population, it is found that the smallest sample size required to obtain the desired margin of error is of 77.
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:

In which:
is the sample mean.
is the standard deviation for the population.
The margin of error is given by:

In this problem, we have that the parameters are given as follows:
.
Hence, solving for n, we find the sample size.






Rounding up, the smallest sample size required to obtain the desired margin of error is of 77.
More can be learned about the z-distribution at brainly.com/question/25890103
Answer:
4
Step-by-step explanation:
80 - 47.08 = 32.92
32.92/8.23 = 4
It means that there is 0.65 for every D there is.
For example, if it costed $0.65 to pay for each apple, the D would represent the apple and in this case the expression would be 0.65d.
Hope I helped :)