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liraira [26]
3 years ago
11

In a survey of 850 students in a school, 90% reported having pets at home. If the margin of error is 3.4%, what is the interval

that is likely to contain the exact percent of all people who have pets at home?
Between 3.4% and 90%
Between 90% and 93.4%
Between 86.6% and 90%
Between 86.6% and 93.4%
Mathematics
2 answers:
Ray Of Light [21]3 years ago
8 0

Answer:

Step-by-step explanation:

Taya2010 [7]3 years ago
6 0

Answer:

<h3>Between 86.6% and 93.4%</h3>

Step-by-step explanation:

<h3>To obtain the population proportion from the sample, we calculate the confidence interval ; </h3><h3> </h3><h3>Confidence interval = phat ± margin of error </h3><h3> </h3><h3>Phat = 90% ; margin of error = +3.4% </h3><h3>  </h3><h3> 90% ± 3.4% </h3><h3> </h3><h3>(90 - 3.4)% ; (90 + 3.4)% </h3><h3> </h3><h3>86.6% ; 93.4%</h3>
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Answer:

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3 years ago
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