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Suppose you choose a marble from a bag containing 4 red marbles, 2 white marbles, and 3 blue marbles. You return the first marble to the bag and then choose again. Find P(red and blue).
A. 4/3
B. 2/3
C. 7/9
D. 4/27 **Weegy:** C. 7/9 (More)

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Updated 6/9/2014 12:28:10 PM

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Suppose you choose a marble from a bag containing 4 red marbles, 2 white marbles, and 3 blue marbles. You return the first marble to the bag and then choose again. Find P(red and blue).

P(red and blue) = 4/9*3/9 = 12/81 = 4/27

P(red and blue) = 4/9*3/9 = 12/81 = 4/27

Added 6/9/2014 12:28:06 PM

This answer has been confirmed as correct, not copied, and helpful.

Identify the sampling method. You want to find how many students use public transportation. You interview every fifth teenager you see exiting a movie theater.
A. random
B. systematic
C. stratified
D. none of these **Weegy:** C. stratified (More)

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Asked 7/3/2012 9:42:31 AM

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You have three $1 bills, four $5 bills, and two $10 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill at random. Find P($10 then $1).
A. 1/12
B. 5/81
C. 5/72
D. 2/27 **Weegy:** C. 5/72 (More)

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Updated 6/9/2014 12:31:34 PM

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You have three $1 bills, four $5 bills, and two $10 bills in your wallet. You select a bill at random. Without replacing the bill, you choose a second bill at random. Find P($10 then $1).

P($10 then $1) = 2/9*3/8 = 6/72 = 1/12

P($10 then $1) = 2/9*3/8 = 6/72 = 1/12

Added 6/9/2014 12:31:31 PM

This answer has been confirmed as correct, not copied, and helpful.

The back-to-back stem-and-leaf plot below show exam scores from two different math classes. Which class has a greater mean score? Which class has a greater median score?
A. greater mean = class A greater median = class A
B. greater mean = class B greater median = class B
C. greater mean = class B greater median = class A
D. greater mean = class A greater median = class B **Weegy:** C. greater mean = class B greater median = class (More)

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Asked 7/3/2012 9:52:36 AM

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Simplify the product using the distributive property.
(-4h +2)(3h +7)
A. -12h2 - 22h + 14
B. -12h2 - 34h - 14
C. -12h2 + 34h - 14
D. -12h2 + 22h + 14

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Updated 6/11/2014 5:23:22 PM

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