The random variable x represents the number of phone calls an author receives in a day, and it has a Poisson distribution with a mean of 7.6 calls. What are the possible values of x

The possible values for the random variable would be:

X=0,1,2,3,4,.....,

All the positive natural integers.

Step-by-step explanation:

Previous concepts

Let X the random variable that represent the number of phone calls an author recieves in a day. We know that

The probability mass function for the random variable is given by:

And f(x)=0 for other case.

For this distribution the expected value is the same parameter

Solution to the problem

The posible values for the random variable would be:

X=0,1,2,3,4,.....,

All the positive natural integers.

could

step-by-step explanation:

u send me a picture of ur work

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: