The height of one story of a building is about 10 feet. The bottom of the ladder on the fire truck must be at least 24 feet away
2 answers:
Answer: There are atleast 2 stories that the ladder can reach.
Step-by-step explanation:
Since we have given that
Height of one story of a building = 10 feet
Length between the bottom of the ladder and the building = 24 feet
So, we need to find the number of stories that the ladder can reach.
So, Number of stories is given by
Hence, there are atleast 2 stories that the ladder can reach.
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Answer:
The probability that the sample will contain exactly 0 nonconforming units is P=0.25.
The probability that the sample will contain exactly 1 nonconforming units is P=0.51.
.
Step-by-step explanation:
We have a sample of size n=4, taken out of a lot of N=12 units, where K=3 are non-conforming units.
We can write the probability mass function as:
where k is the number of non-conforming units on the sample of n=4.
We can calculate the probability of getting no non-conforming units (k=0) as:
We can calculate the probability of getting one non-conforming units (k=1) as:
Answer:
Step-by-step explanation:
We want to simplify:
We rewrite the expression under the radical sign to obtain:
We split the expression under the radical sign to get:
Recall that:
This implies that:
Therefore