Which of the following is a statistical question?

A.

How many hours do students in Mr. Brown's class typically spend on homework?

B.

What is Andy’s shoe size?

C.

What is the room temperature of Charlie's house?

D.

How much did Ashley pay for her smart phone?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?