Answer:
There is a 1.1% chance that a randomly chosen junior will have a score above 95.
Step-by-step explanation:
Calculate the z-score of 95 given a normal distribution with mean 79 and standard deviation of 7. The z-score is a probability (area under the distribution curve) of a value on a normalized random variable that has a distribution with mean 0 and standard deviation of 1. To get such a transformation, you need to subtract the mean and divide by the standard deviation, like this:

Based on this z-value, use z-score tables to look up the area under the curve. This will be the probability that randomly chosen values are lower (or higher, depending which table you are using) than this z-score. Be careful to apply the correct table. I found the following probability that a random z value is higher that the z-score 2.29: 0.011, or 1.1%. This means that there is a 1.1% chance that a randomly chosen junior will have a score above 95.
The strings cost $14. you would take the total cost ($72) and subtract the cost of the book ($16) and you would get $56. you would then divide 56 by the number of book bought (4 in all) and you would get $14.
Answer:
train a weighs 310 tons and train b weighs 303 tons
Step-by-step explanation:
Answer:
Solution given:
B=12.56cm²
P=12.56cm
H=6cm
Surface area of cylinder=P*H+2B=100.48cm²
Volume=B*H=12.56*6=75.36cm³
I attached a picture with equation because it is easier than attempting to type it out.