Answer:
(a) The probability distribution is valid.
(b) The histogram is attached below.
(c) The mean is 33.47.
Step-by-step explanation:
(a)
A probability distribution is valid if:
- P (X = x) ≥ 0 for all values of <em>x</em>.
- ∑ P (X = x) = 1
From the probability distribution table it can be seen that the probability for all <em>x</em> is greater than 0.
Compute the sum of all probabilities as follow:
Thus, the probability distribution is valid.
(b)
The histogram is attached below.
(c)
The formula of mean of a discrete probability distribution is:
Compute the mean as follows:
Thus, the mean is 33.47.
Answer:
see explanation
Step-by-step explanation:
Using the rule of radicals
× ⇔
(a)
×
=
=
=
= ×
= 3
(b)
×
=
=
= 12
option A.
by multiplying both sides by 6 you will get rid of the fraction, thus easier to calculate the inequality.
Answer:
r= 2
Step-by-step explanation:
2^3 is basically 2x2x2
2x2=4 x 2= 8
you can subtract 10 with 8 to fin what r equals to.