When Annabelle runs the 400 meter dash, her finishing times are normally distributed with a mean of 62 seconds and a standard deviation of o.5 seconds. Using
the empirical rule, determine the interval of times that represents the middle 68% of
her finishing times in the 400 meter race.

[61.5, 62.5]

Step-by-step explanation:

The Empirical Rule states that 68% of data observed following a normal distribution lies within 1 standard deviation of the mean.

Thus, you can see that one standard deviation away on both sides land on 61.5 and 62.5

That interval represents 68% of her finishing times in the 400m race.

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.

idk the answer but just put a

step-by-step explanation: