Answer:
A) 29men
B) 91cm
C) 13cm
Step-by-step explanation:
Men with waist of 85cm = 11
A.) Men with waist of more than 85cm = (total number of men - 11) = (40 - 11) = 29men
B.) median waist :
Median = (n) / 2
Where n = number of observations
Median = (40) / 2 = 40/2 = 20th
Taking the intersection of the 20th point on the x-axis,
Median waist = 91cm
C.) Interquartile range(IQR) = (Q3 - Q1)
Q3 = 3/4(n)
Q3 = 0.75 × 40 = 30
Q3 = 97cm
Q1 = 1/4(n)
Q1 = 0.25 × 40 = 10
Q1 = 84cm
IQR = 97 - 84 = 13cm
