Deundre wants to conduct a survey at White Station Middle School, which has 1,200 students. He wants to learn how many days on average students eat the school lunch per week. He knows that it would be too time consuming to ask every single student to complete the survey, so he decided to take a sample (a subset of a population) of the entire school population and only ask 60 students. What is the sample in this example.

The sample size is 60.

Step-by-step explanation:

He only asks 60 people so that is his sample, the other students (1200) is the population he is trying to make a judgement about.

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0