When Jocelyn runs the 400 meter dash, her finishing times are normally distributed with a mean of 61 seconds and a standard deviation of 2 seconds. Using the empirical rule, what percentage of races will her finishing time be between 57 and 65 seconds?

95% of races will her finishing time be between 57 and 65 seconds.

Step-by-step explanation:

Mean=61 seconds

Standard deviation =2

Empirical rule says,

68% of data covered between mean±1 standard deviation

95% of data covered between mean ±2 standard deviation

99.7% of data covered between mean ± 3 standard deviation.

I'll upload the Empirical rule curve.

Because 57 is 61-2(2) and 65 is 61+2(2), so, 95% of data covered.

So, according to Empirical rule, 95% of races will her finishing time.

answer: idk

step-by-step explanation:

answer: the center is the median and/or mean of the data. the spread is the range of the data. and, the shape describes the type of graph. the four ways to describe shape are whether it is symmetric, how many peaks it has, if it is skewed to the left or right, and whether it is uniform. good luck

step-by-step explanation: