Answer:
a)P=0.42
b) 
Step-by-step explanation:
We have a binomial distribution, since the result of each experiment admits only two categories (success and failure) and the value of both possibilities is constant in all experiments. The probability of getting k successes in n trials is given by:

a) we have k=2, n=10 and p=0.01:

b) We have,
, Here P is the probability that at least one particle will penetrate the shield, this probabity has to be equal or greater than 0.95. Therefore, this will be equal to subtract from the total probability, the probability that the particles do not penetrate raised to the total number of particles.

Answer:
13. 70(two digits 7 times 10 which is a multiple of 5)
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Answer:
3/8 cups
Step-by-step explanation:
Total fraction = 1/4 + 1/8
= 2/8 + 1/8
= 3/8
Answer:
C) Casey is incorrect because more than one student can have the same GPA.
Step-by-step explanation:
This is not necessarily true. There are multiple people that will have the exact same Grade Point Average. It is a big school, and some people do as good as others.
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Answer:
5.) 0.134 kg.
6.) 6.15 km.
7.) 5.9 kg.
Step-by-step explanation:
5.) 0.37 - 0.236 = 0.134
6.) 9.71 - 3.56 = 6.15
7.) 1.7 + 4.2 = 5.9