Two bookstores have the same number of book on sale. The prices of those books are graphed below. Which of the following stateme
nts is TRUE?
a
The range of Bookstore B's book prices is greater than that of Bookstore A.
b
50% of Bookstore B's books are below $85.
c
More of Bookstore B's books are below $90 than Bookstore A's.
d
The mean price of Bookstore A's books is $90.
a
The range of Bookstore B's book prices is greater than that of Bookstore A.
b
50% of Bookstore B's books are below $85.
c
More of Bookstore B's books are below $90 than Bookstore A's.
d
The mean price of Bookstore A's books is $90.
2 answers:
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Answer:
a) 0.25
b) 52.76% probability that a person waits for less than 3 minutes
Step-by-step explanation:
Exponential distribution:
The exponential probability distribution, with mean m, is described by the following equation:
In which is the decay parameter.
The probability that x is lower or equal to a is given by:
Which has the following solution:
The probability of finding a value higher than x is:
In this question:
a. Find the value of λ.
b. What is the probability that a person waits for less than 3 minutes?
52.76% probability that a person waits for less than 3 minutes