Answer:
(d)0.6
Step-by-step explanation:
(a)Frequency Distribution

(b)The relative frequency distribution.

(c)The cumulative frequency distribution.

(d)The proportion of customers needing an oil change who wait 9 minutes or less.
Proportion of customers needing an oil change who wait 9 minutes or less.

Answer:
2/3
Step-by-step explanation:
Answer:
1/4
Step-by-step explanation:
15/60 = 1/4
Answer:
8234.000 x 10^3
Step-by-step explanation: