The results of the first die and the second one are independent to each other. The expected value of Z is obtained, therefore, by summing the expected values of both X and Y, because Z = X+Y and X and Y are independent. As a result $\mu_z = \mu_x + \mu_y = 3.6+8.0 = 11.6 .$

4 0

3 years ago

A bag of trail mix weighs 2 lb. By weight, 20% of the bag is oats. How many pounds is the oats portion of the trail mix? (a) Wri

posledela

Answer: 0.4 pounds of the trail mix is oats.

To find the answer, you can set up a proportion. We can use the percent proportion below.

part/whole = percent/100

x/2 = 20/100

To solve this you cross multiply and divide.

100x = 40
x = 0.4

3 0

3 years ago

Subtract 23.4 – 8.78 =_____

anastassius [24]

Answer:

14.62

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Find the error in the student's work. Which of the following steps is where the first error occurred?

Stels [109]

Answer:

Step 1 should have a -2 substituted for both values.

5 0

2 years ago