Answer:
We need a sample size of 1068.
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 .
In this problem:
We need a sample size of n.
n is found when
We do not know the exact proportion, so we use , which is when we are are going to need the largest sample size. So
Rounding up
We need a sample size of 1068.
Answer:
5
Step-by-step explanation:
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The smallest number of schools would be if all the schools entered the max amount of teams they could. So we first just want to say as many schools as possible entered 4 teams.
So here just divide 247 by 4.
That would be 61 R3
So we say that 61 schools entered with four teams. Now there are 3 teams extra. We can assign these to just one school, because a school can enter 3 teams. So then the total amount of schools entered in the XYZ contest, in this case, would be 62.
Answer:
Step-by-step explanation:
They are equal at -40 °C and -40 °F.
F = 9/5C + 32
(F = Fahrenheit and Centigrade)
Answer:
77 centimeters = 2.52625 feet
Step-by-step explanation:
Hope this helps! :3
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