The number of household members, x, living in Cityville homes has the following probability distribution. Х
1
2
3
4
5
6
7
8
P(x)
0.36
0.21
0.12
0.17
0.06
0.04
0.03
0.01
What is the expected size of a household in Cityville?

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

Me n o w. i need t h i s. 10 points

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap