2r(2.59 + 10) - 3(r + 4) + s(r - 1)? equivalent?
1 answer:
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Answer:
Explained below.
Step-by-step explanation:
The random variable <em>X</em> is defined as the number of stars in a given volume of space.
The probability mass function of <em>X</em> is:
(7)
Compute the probability of exactly two stars in 16 cubic light-years as follows:
(8)
Compute the probability of three or more stars in 16 cubic light-years as follows:
(9)
In 16 cubic light years there is only 1 star.
Then in 1 cubic light years there will be, (1/16) stars.
Then in 4 cubic light years there will be, 4 × (1/16) = (1/4) stars.
(10)
In 16 cubic light years there is only 1 star.
Then in 1 cubic light years there will be, (1/16) stars.
Then in <em>t</em> cubic light years there will be, [<em>t</em> × (1/16)] stars.
Answer:
Christopher can take 56 different groups of 5 shirts.
Step-by-step explanation:
Christopher has 8 unique shirts.
Out of these only 5 can fit in his bag.
So the number of ways in which he can choose 5 shirts from the available 8 is given by
This can be evaluated as
Simplifying further,
=
= 56
So Christopher has 56 choices to select 5 shirts out of 8.