Answer:
A sample of 1068 is needed.
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:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.03 for the estimation of a population proportion?
We need a sample of n.
n is found when M = 0.03.
We have no prior estimate of , so we use the worst case scenario, which is 
Then
Rounding up
A sample of 1068 is needed.
Distributive property
Step-by-step explanation:
Distributive property says that x(y + z) = (x*y) + (x *z)
Answer:
You can translate smaller circle onto larger circle so centers line up and then dilate to prove similarity.
Step-by-step explanation:
Answer:
The zoo will cost more money for a group of 12 students to visit.
Step-by-step explanation:
First, you have to divide the costs by the amount of tickets to find out how much you would have to pay for one ticket.
Science Center: $36.76 ÷ 3 = $12.25
Zoo: $51 ÷ 4 = $12.75
Then, the cost for one ticket should be multiplied by 12, the group of students wanting to visit.
Science Center: $12.25 x 12 = $147.04
Zoo: $12.75 x 12 = $153
Comparing the prices, you will see that the zoo will cost $5.96 more dollars than the science center.
Answer: yerror she made is at the level of the first step if you want me to show it to you ask me in comment
