The table above shows the number of students from two different high schools who completed summer internships in each of five years. No student attended both schools.
Which of the following statements are true about the number of students who completed summer internships
for the 5 years shown?
1. The mean number from Foothill High School is greater than the mean number from Valley High School.
2. The median number from Foothill High School is greater than the median number from Valley High
School.
A I only
B ll only
C I and II
D Neither I nor Il

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

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.