STA301 Assignment no.3 Idea Solution
QUESTION 1; Part B
here is the Q:1 part B solution. Also include it in your file..
b) If Z is a standard normal random variable with mean 0 and variance 1, then find the Lower quartile.
Solution
Mean , µ = 0
Variance б2 = 1
Q1 = µ - 0.6745 б
Q1 = 0 - .6745 (1)
Q1 = -.6745
c) What is the probability that a poker hand of 5 cards contain exactly 1 ace?
Answer; -
First, find the probability that the first card is an Ace and the 2nd to 5th are not:
(4/52) * (48/51) * (47/50) * (46/49) * (45/48).
Next, find the probability that the 2nd card is an Ace and the first, 3rd, 4th and 5th are
not:
(48/52) * (4/51) * (47/50) * (46/49) * (45/48).
Next, the 3rd card is an Ace; the others are not:
(48/52) * (47/51) * (4/50) * (46/49) * (45/48).
Next, 4th card is an Ace; not the others:
(48/52) * (47/51) * (46/50) * (4/49) * (45/48).
Lastly, the 5th card is an Ace; not the others:
(48/52) * (47/51) * (46/50) * (45/49) * (4/48).
Adding these, the answer is:
0.29947... which is just under 30%.
QUESTION 1; Part C
100% correct but its not my subject.... Plz do make changes in it.
ALI Also include this one as well in your file. i have solved it for urself...
c) What is the probability that a poker hand of 5 cards contain exactly 1 ace?
Solution:
Since it is "at least" one ace, you have to account for drawing 1, 2, 3, or 4 aces. It is easier to calculate the following: Probability of drawing 0 aces. The probability of drawing
"at least" 1 ace is:
Pr[drawing at least 1 ace] = 1 - Pr[drawing 0 aces]
The probability of drawing 0 aces is:
C(48,5)/C(52,5)
The numerator is the ways we can draw 5-card hands out of 48 cards
(all the cards except for the aces). The denominator is the ways we
can draw any 5-card hands. So the ratio is the number of ways of
drawing no aces. If we subtract it from 1, we get the probability of
drawing "at least" 1 ace.
Pr[drawing at least 1 ace] = 1 - Pr[drawing 0 aces]
= 1 - (C(48,5)/C(52,5))
= 1 – (1712304/ 2598960)
= 1 - 0.658842
= 0.34 Ans
gud g bst of lkOn Tue, Jan 3, 2012 at 8:29 PM, %jugnoo% <blaky.angel05@gmail.com> wrote:
ni me q rooinshALLAH kuich acha hu gaacha scho acha mnile ga:)On Tue, Jan 3, 2012 at 6:28 PM, mc110200350 Riffat Maqbool <mc110200350@vu.edu.pk> wrote:chly g rooy usy jb koi kry ga ap ko b ml jy giOn Tue, Jan 3, 2012 at 8:15 PM, %jugnoo% <blaky.angel05@gmail.com> wrote:
lo mis riffat..................meri hu gi to usko roo gi naaajo he usko to roooo lowhi better
On Tue, Jan 3, 2012 at 6:10 PM, mc110200350 Riffat Maqbool <mc110200350@vu.edu.pk> wrote:
ap ki cs402 ho gi hy jo sta301 ko roo rhy hy agr kr li hy to bakio ki b hlp kr dyOn Tue, Jan 3, 2012 at 8:06 PM, %jugnoo% <blaky.angel05@gmail.com> wrote:
----Thori C Thakawat Pe Namaz Na ChorAe INSAAN.........
Un Se Kuch Seekh Jinho Ne Jism MainKhanjar Hote Hue B Aakhri SAJDA Na Chora......!!
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