One characteristic of a bar chart is: A) the bars can be ...

[kamilo84]

One characteristic of a bar chart is:
 
  A) the bars can be displayed either vertically or horizontally.
  B) there can be no gaps between the bars.
  C) it is used to display the distribution of a continuous variable.
  D) it shows cumulative frequency.

Question 2

Assume that a standard deck of 52 playing cards is randomly shuffled and the first 2 cards are dealt to you. What is the probability that you have a blackjack? A blackjack is where one card is an ace and the other card is worth 10 points.
 
  The 10-point cards are kings, queens, jacks and 10's.

[Brummell1998]

Answer to Question 1

A

Answer to Question 2

It doesn't matter which card was first so there are two ways to have a blackjack. One is to get the ace first and the 10-point card second. The other way is to get the cards in the reverse order. There are 4 aces and 16 of the 10-point cards.

P( Ace on 1st card) = 4/52
P(10 on 2nd card given that 1st card was Ace) = 16/51

So P(black where Ace is 1st) =(4/52)(16/51 ) = 0.0241

P(10 on 1st card) = 16/52
P(Ace on 2nd card given the first card was a 10 ) = 4/51

So P(blackjack where Ace is 2nd) = (16/52)(4/51 ) = 0.0241

The two methods of getting a blackjack are mutually exclusive so these probabilities can be added to find the total probability of a blackjack.

P(blackjack) = 2 (0.0241 ) = 0.0482

[kamilo84]

Correct answers!

[Brummell1998]

Great! Please up vote