If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1).
If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down (no change).
Margin error of a sample mean is given by
where σ is the standard deviation,
is the critical value and n is the sample mean.
So beside the given standard deviation, we're supposed to know the sample size and critical value to answer this question.
Answer:
{ 9/2 , square root of 100, 5.123}
Step-by-step explanation:
The two equations are above. It is better to go to Ice Plex for skates under five hours and Skate World for skates over five hours.
2x-4. This is your answer