PLZ HELP I WILL GIVE BRAINLIEST...

Scott and Kira want to find the mean number of movies students in their class saw last year. So they each randomly select students in their class and ask for the numbers.
The results are shown below. Use the data to answer the questions.

Scott's sample:
9, 16, 10, 11, 14, 7
Kira's sample:
6, 19, 14, 15, 16, 9, 20

(a) What is the sample size for Scott's sample?

(b) What is the sample size for Kira's sample?

(c) Suppose you had to choose one sample to estimate the mean.
Which sample is more likely to give a good estimate of the mean?

a.) Scott's sample

b.)Kira's sample

why?

a.) It has the smaller sample size.

b.) It has the larger sample size.

c.) It has the smaller mean.

d.) It has the larger mean.

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.

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.

Which function has the domain x> -11? y= x+ 11 +5 y= x-11 +5 y= x+5 - 11 y= x+5 + 11