Suppose that X has a Poisson distribution with parameter

lambda

equals

=

4.8

4.8. Find

a. P(X

equals

=

4

4).

b. P(X

less than

<

3

3).

c. P(X

greater than or equals

4

4). (Hint: Use the complementation rule.)

d. the mean of X.

e. the standard deviation of X.

a. P(X

equals

=

4

4)

equals

=

nothing

(Do not round until the final answer. Then round to four decimal places as needed.)

b. P(X

less than

<

3

3)

equals

=

nothing

(Do not round until the final answer. Then round to four decimal places as needed.)

c. P(X

greater than or equals

4

4)

equals

=

nothing

(Do not round until the final answer. Then round to four decimal places as needed.)

d.

mu

equals

=

nothing

e.

sigma

equals

=

nothing

(Round to three decimal places as needed.)