Suppose that two cards are randomly selected from a standard 52-card deck. (a) What is the probability that the first card is a spadespade and the second card is a spadespade if the sampling is done without replacement? (b) What is the probability that the first card is a spadespade and the second card is a spadespade if the sampling is done with replacement?

Respuesta :

Answer:

a.[tex]\frac{1}{17}[/tex]

b.[tex]\frac{1}{16}[/tex]

Step-by-step explanation:

We are given that two cards are drawn are randomly selected from a standard 52- cards deck.

Total cards=52

Total number of spade cards=13

Probability=[tex]\frac{number\;of\;favourable\;cases}{total\;number\;of cases}[/tex]

a.The probability of drawing two cards first card is spade and second card is spade without replacement =[tex]\frac{13}{52}\times \frac{12}{51}[/tex]

The probability of drawing two cards first card is spade and second card is spade=[tex]\frac{1}{17}[/tex]

b. The probability of drawing two cards first is spade and second card is a spade with replacement =[tex]\frac{13}{52}\times\frac{13}{52}[/tex]

The probability of drawing two cards first is spade and second card is a spade with replacement =[tex]\frac{1}{16}[/tex]