Test 1 Retake Probability and Variations

Two nickels are flipped at the same time. What is the probability that both coins will show tails?

Type your answer in the blank provided don't uses spaces. If a fraction use /

(a)  

You have 12 shirts in a drawer.

· 4 black shirts

· 3 red shirts

· 5 white shirts

If you randomly select a shirt from the drawer, what is the probability you will select a red shirt?

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• 1/4

• 3/12

• 1/3

• 3/11

In a bowl there are 15 candy bars.

· 6 are Snickers

· 5 are Kit Kat

· The rest of the candy bars are Milky Ways

If you eat a candy bar and then choose another candy bar, what is the probability that the first bar will be a Kit-Kat and the second will be a Snickers?

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• 2/15

• 1/12

• 1/7

• 11/15

A newspaper poll was taken to determine the probable winner in an election for President. The probability that Mustapha will win is 0.2, while the probability that Nasir will win is 0.7. What is the probability that either Mustapha or Nasir will win?

Type your answer as a decimal. Don't use spaces.

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(a)  

Which events is considered to be dependent?

Read through each and select the correct answers.

• Removing a card from a deck, then drawing another card

• A bag contains eight red marbles and four blue marbles. You randomly pick a marble and then pick a second marble without returning the marbles to the bag. The first marble is red and the second marble is blue

• A box of chocolates contains five milk chocolates, five dark chocolates, and five white chocolates. You randomly select and eat three chocolates. The first piece is milk chocolate, the second is dark chocolate, and the third is white chocolate

• You have 10 sodas in a cooler. You randomly grab a soda but then decide you would rather have another type so you put the first soda back before choosing a second soda

Which inequality represents the probability, x, of any event happening?

• $x\ge0$

• $0<x<1$

• $x<1$

• $0\le x\le1$

The table shows the breakdown of the students by gender and year.

A student is selected at random to assist in a demonstration. What is the probability that the student selected is a female sophomore?

• 0.08

• 0.25

• 0.10

• 0.45

Students were chosen randomly. Find the probability.

P(freshman)

• 16/33

• 16/59

• 26/59

• 14/59

Find

P(male sophomore)

Type your answer as a fraction without spaces using a forward /

(a)  

How many different cars can be created if there are:

3 types of transmissions - manual or automatic

5 exterior colors – black, red, white, green, light blue, dark blue, yellow or silver

4 interior colors – black, tan, red, light blue, or dark blue

Type the number. don't use spaces

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(a)