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Which graph shows -3x-7 is less than 20
1 answer:
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<h2>Common ratio = -1/2</h2>
Step-by-step explanation:
term of a Geometric progression is given as
. The first term is given as
.
Any general Geometric progression can be represented using the series .
The first term in such a GP is given by , common ratio by
, and the
term is given by
.
In the given GP,
∴ Common ratio is .
Answer:
a)
b)
c)
d)
e)
Step-by-step explanation:
1) Previous concepts
The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".
2) Solution to the problem
Let X the random variable of interest, on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
3) Part a
4) Part b
5) Part c
6) Part d
The expected value is:
7) Part e
The variance is given by: