Darsh’s simulated samples:

Sample 1 (size 50)

Sample 1 mean: 15.4

Sample 2 (size 50)

Sample 2 mean: 11.8

Sample 3 (size 100)

Sample 3 mean: 16.1

Sample 4 (size 100)

Sample 4 mean: 16.3

Darsh is trying to determine the average number of hours the students at his school study each week. He used a random number generator to simulate the possible results. His samples are shown.

If the school has 3,000 students, which sample size is more appropriate?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Type the correct answer in each box. use numerals instead of words. the average number of subscribers to an online magazine each year from 2010 to 2015 is given in the table below. the average number of subscribers to the online magazine in 2010 was the percent increase in the average number of subscribers in 2011 to the average number of subscribers in 2012 was %. the maximum average number of subscribers to the online magazine in the years shown was

What is the arc length of the subtending arc for an angle of 72 degrees on a circle of radius 4? o a. 8a oc. 16 t d. 8