X/24 = 25/100
100x = 600
100x/100 = 600/100
x = 6
6 students failed the test
Answer:
The z-score for this kernel is -2.3
Step-by-step explanation:
* Lets revise how to find the z-score
- The rule the z-score is z = (x - μ)/σ , where
# x is the score
# μ is the mean
# σ is the standard deviation
* Lets solve the problem
- The popping-times of the kernels in a certain brand of microwave
popcorn are normally distributed
- The mean is 150 seconds
- The standard deviation is 10 seconds
- The first kernel pops is 127 seconds
- We want to find the z-score for this kernel
∵ z-score = (x - μ)/σ
∵ x = 127
∵ μ = 150
∵ σ = 10
∴ z-score = (127 - 150)/10 = -23/10 = -2.3
* The z-score for this kernel is -2.3
Answer:
1. A
2. B
3. A
Step-by-step explanation:
Hope this helps!
Answer:
The slope is 1.
Step-by-step explanation:
Remember:
Let's plug in!
Answer:
87
Step-by-step explanation:
348 divided by 4
