$\text { Find the required sample size without making a guess for the observed value of } \hat { p } \text {. }$

question 80

Multiple Choice

$\text { Find the required sample size without making a guess for the observed value of } \hat { p } \text {. }$
-A researcher wishes to estimate the proportion of all drivers who exceed the speed limit on a certain stretch of road where accidents frequently happen. Obtain a sample size that will ensure a
Margin of error of at most 0.021 for a 98% confidence interval.

• A)65
• B)3078
• C)28
• D)1321

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Definitions:

Sleep Stage

A period during sleep characterized by specific brain activity patterns and physiological changes.

Non-REM Sleep

A state of sleep that includes all sleep stages except for REM (rapid eye movement) sleep, characterized by slower brain waves and reduced brain activity.

Night Terrors

A sleep disorder causing feelings of panic or dread, typically occurring in children during non-REM sleep.

Rapid Eye Movements

Quick, simultaneous movements of both eyes in the same direction, which occur in phases of sleep associated with vivid dreaming.