Answer:
Step-by-step explanation:

Sorry, I'm not completely sure but I want to be helpful.
3 x 10 to the power of 8
Answer:
Step-by-step explanation:
a) Probability-Above 30 min = 5.72% = .0572
b) Probability-Above 15 min = 99.11% = .9911
c) *Probability-Between 1 - 59.49% = .4051
d) 19.136 minutes z = -1.28