Answer:
20%
Step-by-step explanation:
Probability=5/(5+12+8)*100=5/25*100=20%
The answer should be either b or d but i’m not too sure
Answer: X=12
Explanation: 180-72= 108. 108 divided by 9 is 12
Answer:
b. 2.28%.
Step-by-step explanation:
Mean temperatue (μ) = 1000°F
Standard Deviation (σ) = 50
°F
For any temperature value, X, the z-score is given by:
For X= 900°F

A z-score of -2.0 corresponds to the 2.28-th percentile of a normal distribution. Therefore, the probability that X<900 is:
