Construct cumulative frequency and cumulative percent ...

[Caiter2013]

Construct cumulative frequency and cumulative percent distributions of the data.
 
  What will be an ideal response?

Question 2

Let the random variable Z follow a standard normal distribution, and let z1 be a possible value of Z that is representing the 10th percentile of the standard normal distribution. Find the value of z1.
 
  A) 0.255
  B) -0.255
  C) 1.28
  D) -1.28

[frre432]

Answer to Question 1

Number of people Cumulative Frequency Cumulative
< 17 1 5
< 24 4 20
< 31 10 50
< 38 13 65
< 45 16 80
< 52 19 95
< 59 20 100

Answer to Question 2

D

[Caiter2013]

TYSM

[brbarasa]

Excellent