Answer:
Both Amy and Fraser walk distances equal to the radius of the lawn.
Step-by-step explanation:
The radius of a circle is a line segment from the center to the outside edge (circumference).
Amy walks from O, the center, to A, along the outside edge, using segment OA. This is a radius of the circle.
Fraser walks from O, the center, to B, along the outside edge, using segment OB. This is a radius of the circle.
Thus the correct answer is that both Amy and Fraser walk distances equal to the radius of the lawn.
Answer:
0.1997 or 19.97%
Step-by-step explanation:
Have taken course online (H) = 23%
Have NOT taken course online (N) = 77%
Have taken course online and don't believe they provide same value (H&D) = 61%
Have NOT taken course online and don't believe they provide same value (N&D) = 73%
The probability that a student has taken a course online given that she does not believe that online courses provide the same educational value as one taken in person is;

There is a 0.1997 or 19.97% chance that she has taken an online course before.
Answer:
Step-by-step explanation:the first one
Answer:
Population standard deviation,
= 3683.063 .
Step-by-step explanation:
We are given that the width of the estimated confidence interval i.e. 99% is 600 and the sample size used in estimating the mean is 1000 which means ; n = 1000 and width = 600
We know that Width of confidence interval = 2 * Margin of error
<em> Margin of error</em><em> </em>=
= 2.5758 *
{because at 1% significance level
z table has value of 2.5758 .}
Therefore, 600 = 2 * 2.5758 *
⇒
=
= 3683.063 .
Hence, the Population standard deviation = 3683.063 .