1.23 A box contains n identical balls numbered 1 through n [Papoulis 1.1]. Suppose k balls...
4. A box contains N identical balls numbered 1 through N. Of these balls, n are drawn at -1 Xi a time. Let Xi , X2,···x, denote the numbers on the n balls drawn. Let S,- Find var(S)
Question 5 A box contains balls numbered 1, .,.,a. A ball is drawn at random: (a) What is the probability that its label number is divisible by 3 or 4? (b) What is the probability in (a) as noo?
There are balls numbered 1, 2, 3, 4, 5, 6, 7 in a box, 2 balls are drawn in succession at random without replacement, and the number on each ball is noted. What is the probability that exactly one ball has an even number? (A) 3/14 (B) 2/7 (C) 3/7 (D) 12/49 (E) 4/7
V n balls are numbered one through n; draw them (without replacement); what is the probability that at least one ball will be drawn with its number equal to the number of balls drawn? As n -oo what is the probability? Use P(A U BU...)P(A) +P(B) +-P(AnB)- This gives -1)1 n n-1 = 1 ~-~ 0.632121 kl Your assignment is to show how we get these last two equalities
Suppose that a person plays a game in which he draws a ball from a box of 6 balls numbered 1 through 6. He then puts he ball back and continues to draw a ball (with replacement) until he draws another number which is equal or higher than the first draw. Let X and Y denote the number drawn in the first and last try. respectively. a) Find the probability distribution of X (The first draw) b) Find the probability...
We randomly distribute 5 identical balls to 3 distinct boxes numbered 1,2,3. Given that no box is empty find the probability that box 1 contains 3 balls.
5. Three boxes are numbered 1, 2 and 3. For k 1, 2, 3, box k contains k blue marbles and 5 - k red marbles. In a two-step experiment, a box is selected and 2 marbles are drawn from it without replacement. If the probability of selecting box k is proportional to k, then the probability that two marbles drawn have different colours is 6. Two balls are.dropped in such a way that each ball is equally likely to...
1.3-9. An urn contains four balls numbered 1 through 4 The balls are selected one at a time without replacement. A match occurs if the ball numbered m is the mth ball selected. Let the event A, denote a match on the ith draw i 1,2, 3, 4. 3! (a) Show that P(A)for each i 4! 2! (b) Show that P(A, nA,) =-, i 1! (d) Show that the probability of at least one match is (e) Extend this exercise...
There are 94 identical plastic chips numbered 1 through 94 in a box. What is the probability of reaching into the box and randomly drawing a chip number that is greater than 42? Express your answer as a simplified fraction or a decimal rounded to four decimal places.
There are 370 identical plastic chips numbered 1 through 370 in a box. What is the probability of reaching into the box and randomly drawing a chip number that is smaller than 201? Express your answer as a simplified fraction or a decimal rounded to four decimal places.