Unit 5 Combo Practice Day 3

Which statement describes independent? Which statement is dependent?

• Independent - Jackie used one of her paint brushes and replace it.

  Dependent - Bob used one of his paint brushes then tossed it away to reach for a new brush.

• Independent - You pick up the marble then replaced it.

  Dependent - you pick out a birthday card and an put it back on the shelf.

• Independent - You pick out two toy cars without replacement.

  Dependent - the prom king and queen was chosen from a group of 20 students.

• All three of these situations are correct.

You spin the spinner two times, which event has a probability of 5/48 ? (each section is equal)

• Lands 1st time on unshaded part and 2nd time on unshaded part.

• Lands 1st time on greater than 7 and 2nd on greater than 9.

• 1st time lands on an even number or 2nd time on the number 7.

• 1st time lands on an odd number or 2nd time on an even number.

The shaded region show the scoring zone of the dartboards. For which dartboard is the probability of landing in the scoring zone is 80%?

• A

• B

• C

• D

Lucas randomly chose a letter from the unshaded box, and then randomly chooses a letter from the shaded box. What is the probability the he choose an unshaded box with T, followed by a shaded box with letter T?

• 1/354

• 1/550

• 1/275

• 1/242

A 4 sided fair cube had different color on each side - red, orange, green and gold. You roll 3 times. What is the probability that you will row green each time?

• 1/49

• 1/64

• 1/7

• 1/14

Tom has cookies to sell. Ten peanut butter, five sugar cookies and one chocolate chip. Suppose you bought one cookie and then put it back for another. What is the probability of randomly choosing a peanut butter cookie first and then choosing a second that is not a sugar cookie?

• 0.37

• 0.48

• 0.26

• 0.43

Becca has a basket of flowers to sell. Three daisies, three roses, and three lilies. You choose three flowers from the basket, without replacement. What is the probability of choosing a rose, or daisy, or lily?

• 6.21

• 0.78

• 2.20

• 1.08

If you choose two letters at the same time, what is the probability both letter are A?

• 1/30

• 1/25

• 4/125

• 1/600

A coffee shop sells 2 coffees, 1 energy drink and 10 muffins. Which statement is is true?

• If the shop sells 200 items then we expect 125 muffins sold.

• If the shop sells items at random then we expect four times a many muffins as coffees.

• If the shop sells items at random, we expect over third of them to be coffee or energy drinks.

• If the shop sells 100 random items, then we expect 15 coffee sold.

There are four birthday cards on the shelf. JC randomly picks two cards. What is the probability that a snoopy card is chosen first and then flower card is chosen second?

• 2/16

• 1/16

• 1/12

• 1/1