Work for MATH 158 Final Exam, Problem 1

Problems 1, 2, 3

GroupA= c(3, 0, 5, 2, 1, 7, 3)
GroupB= c(4, 9, 0, 1, 6, 3, 5)
GroupC= c(2, 5, 7, 7, 5, 10, 9)

mean(GroupA)

## [1] 3

mean(GroupB)

## [1] 4

mean(GroupC)

## [1] 6.428571

Problem 6

scoredata= c(3, 0, 5, 2, 1, 7, 3, 4, 9, 0, 1, 6, 3, 5, 2, 5, 7, 7, 5, 10, 9)
var(scoredata)*20

## [1] 177.2381

Problem 4

mean(scoredata)

## [1] 4.47619

SSTreatment= 7*(3 - 4.476)^2 + 7*(4- 4.476)^2 + 7*(6.43- 4.476)^2
SSTreatment

## [1] 43.56288

Problem 5

177.24 - 43.52

## [1] 133.72

Problem 7

43.52 / 2

## [1] 21.76

Problem 8

133.71 / 18

## [1] 7.428333

Problem 9

21.76 / 7.43

## [1] 2.928668

Problem 12

pf(2.93, 2, 18, lower.tail=F)

## [1] 0.07914411