If seven is added to four times a number, the result is twenty-five more than the number. Round your answer to the nearest integ
1 answer:
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Hi,
Center is (0,0)
Foci are (-3√2,0) and (3√2,0)
Center is (0,0)
Foci are (-3√2,0) and (3√2,0)
Answer:
The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).
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:
90% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).