Question

hs: algebra 2b m (sequential) / 7:probability and statistics
objectives

1	0.15	0.20	06-20
2	0.25	0.45	21-45
3	0.30	0.75	46-75
4	0.20	0.95	76-95
5	0.05	1.00	96-100

intervals	1	2	3	4	5	6	total
number of calls	2	4	2	3	1	4	?

Explanation:

Step1: Sumarizar los valores de llamadas

$2 + 4 + 2 + 3 + 1 + 4$

Step2: Calcular la suma total

$2+4=6$; $6+2=8$; $8+3=11$; $11+1=12$; $12+4=20$

Answer:

20