MATH 105 KU HUBER EXAM #2
2026/2027 | MATHEMATICS STUDY
GUIDE, PRACTICE QUESTIONS, ANSWERS
& EXAM REVIEW
1-4 of 8
Match term to definition
Select a definition to match it with its term
5.5-2. Bob says, "The more lottery tickets I buy the more likely I am to win a prize." Ann
says, "Buying more lottery tickets will not increase your expected value." Who is right?
Give this one a go later!
both
5.5-5. A card game goes like this: You draw a card from a 52-card deck. If it is a face card
( jack, queen or king), you win $4; otherwise, you lose $2. What is your expected value for
this game? (Round your answer to the nearest cent.)
Give this one a go later!
$-.46--> -.5 -WRONG
, (12/52)(4)+(36/52)(-2)=
5.5-4. A company produces products at a cost of $31 each. Defective products cost an
additional $14 each to repair. The probability of no defective products is 80%. The
probability of 5% defective products is 20%. What is the expected cost of producing 600
products?
Give this one a go later!
$16560 -WRONG
.2*600=120 defective
.8*600=480 good
480*31=14880 good
120*14=1680 defective
5.5-3. You play a gambling game with your friend in which you win 60% of the time and
lose 40% of the time. When you lose, you lose $1. What profit should you earn when you
win in order for the game to be fair? (Round your answer to the nearest cent.)
Give this one a go later!
$ .67
2026/2027 | MATHEMATICS STUDY
GUIDE, PRACTICE QUESTIONS, ANSWERS
& EXAM REVIEW
1-4 of 8
Match term to definition
Select a definition to match it with its term
5.5-2. Bob says, "The more lottery tickets I buy the more likely I am to win a prize." Ann
says, "Buying more lottery tickets will not increase your expected value." Who is right?
Give this one a go later!
both
5.5-5. A card game goes like this: You draw a card from a 52-card deck. If it is a face card
( jack, queen or king), you win $4; otherwise, you lose $2. What is your expected value for
this game? (Round your answer to the nearest cent.)
Give this one a go later!
$-.46--> -.5 -WRONG
, (12/52)(4)+(36/52)(-2)=
5.5-4. A company produces products at a cost of $31 each. Defective products cost an
additional $14 each to repair. The probability of no defective products is 80%. The
probability of 5% defective products is 20%. What is the expected cost of producing 600
products?
Give this one a go later!
$16560 -WRONG
.2*600=120 defective
.8*600=480 good
480*31=14880 good
120*14=1680 defective
5.5-3. You play a gambling game with your friend in which you win 60% of the time and
lose 40% of the time. When you lose, you lose $1. What profit should you earn when you
win in order for the game to be fair? (Round your answer to the nearest cent.)
Give this one a go later!
$ .67
