Russell's monthly net income is $2397.his housing budget for the month is $685 .housing is what percentage of his monthly net in
1 answer:
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Answer:
, option D
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 .
From a random sample of 50 students, she found that 32 students read at least 1 book last month.
This means that
90% confidence level
So , z is the value of Z that has a pvalue of
, so
.
Confidence interval:
So the correct answer is given by option D.