Question

there were 324 adults surveyed. among the participants, the mean number of hours of sleep each night was 7.5 and the standard deviation was 1.6.

the margin of error, assuming a 95% confidence level, is approximately round to the nearest hundredth.

Explanation:

Identify the given values and formula

Using the Margin of Error Calculation knowledge point

$$
LATEXBLOCK0
$$

Calculate the margin of error

Using the Margin of Error Calculation knowledge point

$$
LATEXBLOCK1
$$

Round to the nearest hundredth

Using the Margin of Error Calculation knowledge point

$$ E \approx 0.17 $$

Answer:

There were 324 adults surveyed. Among the participants, the mean number of hours of sleep each night was 7.5 and the standard deviation was 1.6.

The margin of error, assuming a 95% confidence level, is approximately <blank>0.17</blank>. Round to the nearest hundredth.