Answer:
Step-by-step explanation:
Add all paper clip sizes together:
They want the probability of either a small or medium being chosen, so you add both paper clips sizes together.
Now put the number of small and medium paper clips together over the total number of paper clips to find the probability.
Can divide 350 and 500 by 50, which simplifies it down to 7/10.
Answer: B. 0.4772
Step-by-step explanation:
Given : The mean time :
Standard deviation :
Let X be the service time of a randomly selected customer.
Assuming a normal distribution, the value of z-score is given by :-
For x = 64
For x = 100
The p-value =
Hence, the probability that a randomly chosen customer experiences service done between 64 and 100 minutes = 0.4772