I need help graphing y equals -4/3 x - 1 o
2 answers:
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I think it’s either # 3 or #4 I tried dividing 2401 by 10 and it is 240.1. Hope this helps
Answer:
A sample of at least 545 adults 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 .
For this problem, we have that:
The margin of error is:
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
If he wishes to be 95% confident that his estimate contains the population proportion, how large a sample will be necessary?
We need a sample of at least n.
n is found when M = 0.03. So
Rounding up
A sample of at least 545 adults is needed.