Suppose that 20 students take a statistics exam worth 100 points. The standard deviation of the exam scores is 5 points. Which one of the following statements gives the most reasonable description of the distribution of exam scores?

The difference between 23 and Q1 is 5.
All of the individual scores are five points apart.
A typical score is within 5 points of the mean.
The difference between the highest and lowest score is 5.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

i dont know

step-by-step explanation:

umm. i dont know

step-by-step explanation: 2

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya