Answer:
n = 1500
Step-by-step explanation:
The sample size is the number of students that were asked
n = 1500
Answer:
Mean=50.25
Step-by-step explanation:

Angle WXY is 100 degrees. You add angle WXZ and angle ZYX and you get 100. 60+40=100
Answer:
B. 2.786 x 10 ^ 7
Step-by-step explanation:
For scientific notation you have 1 number to the left of the decimal point and 10 gets raised to the power of the number of decimal places it takes to get that one number.