Question and Answers Forum

All Questions Topic List

Probability and StatisticsQuestion and Answers: Page 7

Question Number 152937 Answers: 1 Comments: 0

Question Number 152935 Answers: 1 Comments: 0

Question Number 152903 Answers: 5 Comments: 0

Question Number 152683 Answers: 1 Comments: 0

The probability that athlete will win a race is (1/6) and that he will be second and third are (1/4) and (1/3) respectively.what is the probability that he will not be first in the first three place! Please,help me out

$T h e p r o b a b i l i t y t h a t a t h l e t e w i l l w i n a r a c e i s \frac{1}{6} a n d t h a t$ $h e w i l l b e s e c o n d a n d t h i r d a r e \frac{1}{4} a n d \frac{1}{3}$ $r e s p e c t i v e l y . w h a t i s t h e p r o b a b i l i t y t h a t h e w i l l n o t b e f i r s t$ $i n t h e f i r s t t h r e e p l a c e!$ $P l e a s e, h e l p m e o u t$

Question Number 152321 Answers: 0 Comments: 0

Question Number 151602 Answers: 6 Comments: 0

Question Number 151454 Answers: 0 Comments: 2

when a die is rolled 42 times it is so happened that a face having the digit i times occured 2i times. then find the mean deviation from the mean of this discrete frequency distribution. ans is ((80)/(63)) sol pls

$w h e n a d i e i s r o l l e d 42 t i m e s i t i s s o$ $h a p p e n e d t h a t a f a c e h a v i n g t h e d i g i t i$ $t i m e s o c c u r e d 2 i t i m e s . t h e n f i n d t h e$ $m e a n d e v i a t i o n f r o m t h e m e a n o f t h i s$ $d i s c r e t e f r e q u e n c y d i s t r i b u t i o n .$ $a n s i s \frac{80}{63}$ $s o l p l s$

Question Number 150450 Answers: 0 Comments: 0

show the?connection between the beta distribution(n,p) and hypergeometric distribution(N,k,n)in a limiting case

$show the ? connection between the$ $beta distribution (n, p) and hypergeometric$ $distribution (N, k, n) in a limiting case$

Question Number 150323 Answers: 0 Comments: 0

a pmf of a random variable Xis given as f(x)=(e^(−10) . 10^x )/x! X=0 , 1 ,2 ... find P(x<16)

$a pmf of a random variable Xis given as$ $f (x) = (e^{- 10} . 10^{x}) / x! X = 0, 1, 2 . . . find$ $P (x < 16)$

Question Number 150154 Answers: 0 Comments: 0

1)The probability of a Malaria patient surviving from a newly discovered drug is 0.27,while the probability of a typhoid patient surviving from another newly discovered drug is 0.85.Find the probabilities of i)Either of the two patient surviving ii)Neither of the two patient surviving iii)At least one survives

$1) The probability of a Malaria patient$ $surviving from a newly discovered$ $drug is 0.27, while the probability of$ $a typhoid patient surviving from another$ $newly discovered drug is 0.85 . Find$ $the probabilities of$ $i) Either of the two patient surviving$ $ii) Neither of the two patient surviving$ $iii) At least one survives$

Question Number 150030 Answers: 0 Comments: 0

Roll a fair die twice and define A to be event that the sum of the scores showing up is greater than 7, B be the event that the sum of the scores showing up is a multiple of 3 and C be the event that the sum of the scores showing up is a prime number. Which of the events A,B and C are independent event? are the 3 events jointly independent?

$Roll a fair die twice and define A to be$ $event that the sum of the scores showing$ $up is greater than 7, B be the event that$ $the sum of the scores showing up is a$ $multiple of 3 and C be the event that$ $the sum of the scores showing up is a$ $prime number . Which of the events$ $A, B and C are independent event ?$ $are the 3 events jointly independent ?$

Question Number 149981 Answers: 1 Comments: 0

a full deck of 52 cards contains 13 hearts. Pick 8 cards from the deck at random without replacement. what is the probability that you get no heart?

$a full deck of 52 cards contains 13$ $hearts . Pick 8 cards from the deck$ $at random without replacement .$ $what is the probability that you get$ $no heart ?$

Question Number 149534 Answers: 2 Comments: 0

Question Number 149532 Answers: 1 Comments: 0

on realise une suite infinie d′epreuves independantes.chaque epreuve resulte en un succes avec la probabilite p∈]0;1[ ou un echec avec la probabilite q=1−p.soit A_n l′evement “obenir au moins un succes au cours des premieres epreuves.” determiner P(A_n )

$o n r e a l i s e u n e s u i t e i n f i n i e d^{'} e p r e u v e s$ $i n d e p e n d a n t e s . c h a q u e e p r e u v e r e s u l t e e n$ $u n s u c c e s a v e c l a p r o b a b i l i t e p \in] 0; 1 [o u u n$ $e c h e c a v e c l a p r o b a b i l i t e q = 1 - p . s o i t A_{n}$ $l^{'} e v e m e n t ‘ ‘ o b e n i r a u m o i n s u n s u c c e s a u$ $c o u r s d e s p r e m i e r e s e p r e u v e s .^{″} d e t e r m i n e r$ $P (A_{n})$

Question Number 149471 Answers: 1 Comments: 0

on distribue au hasard 8 boules b_1 ...b_8 dans 6 tiroirs t_1 ...t_6 .soit A_i l′evenement “le tiroir t_i est vide” les evenements A_1 et A_2 sont-ils independants ?

$o n d i s t r i b u e a u h a s a r d 8 b o u l e s b_{1} . . . b_{8}$ $d a n s 6 t i r o i r s t_{1} . . . t_{6} . s o i t A_{i} l^{'} e v e n e m e n t$ $‘ ‘ l e t i r o i r t_{i} e s t {v i d e}^{″} l e s e v e n e m e n t s A_{1} e t$ $A_{2} s o n t - i l s i n d e p e n d a n t s ?$

Question Number 149463 Answers: 1 Comments: 0

Let the independent random variables X_1 and X_2 have binomial distribution with parameters n_1 =3,p=2/3 and n_2 =4 p=1/2 respectively. Compute P(X_1 =X_2 )

$Let the independent random variables$ $X_{1} and X_{2} have binomial distribution$ $with parameters n_{1} = 3, p = 2 / 3 and n_{2} = 4$ $p = 1 / 2 respectively .$ $Compute P (X_{1} = X_{2})$

Question Number 149406 Answers: 0 Comments: 0

if x has a binomial distribution with n=10 and p=(1/3).Find E(e^(3x) )

$i f x h a s a b i n o m i a l d i s t r i b u t i o n w i t h n = 10 a n d p = \frac{1}{3} . F i n d E (e^{3 x})$

Question Number 149030 Answers: 0 Comments: 0

f(x)=4_−_(5^x +1) x=0,1,2..... find the moment generating function

$f (x) = \underset{\underset{5^{x} + 1}{-}}{4} x = 0, 1, 2 . . . . . find the moment$ $generating function$

Question Number 149440 Answers: 1 Comments: 0

Question Number 148864 Answers: 1 Comments: 0

A random variable K has a pdf f(k)={_(0 , otherwise) ^e^(−k , 0>k) find E(K) and the cdf

$A random variable K has a pdf$ $f (k) = {_{0, otherwise}^{e^{- k, 0 > k}} find E (K) and$ $the cdf$

Question Number 148620 Answers: 1 Comments: 0

consider the following pdf of a random variable X f(x)={Σ_(i=0) ^∞ [(−x^2 )i/i!]_(0 otherwise) ^(x>0) find the variance X

$consider the following pdf of$ $a random variable X$ $f (x) = {\sum_{i = 0}^{\infty} {[(- x^{2}) i / i!]}_{0 otherwise}^{x > 0}$ $find the variance X$

Question Number 148569 Answers: 2 Comments: 1

Question Number 148534 Answers: 1 Comments: 8

Question Number 147906 Answers: 1 Comments: 0

4 bad apples are mixed accidentally with 20 good apples. Obtain the probability distribution of the numbers of bad apples in a draw of 2 apples at random

$4 b a d a p p l e s a r e m i x e d a c c i d e n t a l l y$ $w i t h 20 g o o d a p p l e s . O b t a i n t h e$ $p r o b a b i l i t y d i s t r i b u t i o n o f t h e$ $n u m b e r s o f b a d a p p l e s i n a d r a w o f$ $2 a p p l e s a t r a n d o m$

Question Number 147895 Answers: 0 Comments: 0

Question Number 147413 Answers: 0 Comments: 0

An experiment consist of flipping a coin and then flipping it a second time if a head occurs.If a tail appears on thei first flip then a die is tossed once. a. Listthe element of the sample space S.b b. List the element of S corresponding to the event A that a number less than 4 occurred on the die. c. List thet element of S corresponding to the event B that 2 tails occurred.

$An experiment consist of flipping a$ $coin and then flipping it a second time$ $if a head occurs . If a tail appears on thei$ $first flip then a die is tossed once .$ $a . Listthe element of the sample space S . b$ $b . List the element of S corresponding$ $to the event A that a number less than$ $4 occurred on the die .$ $c . List thet element of S corresponding to the$ $event B that 2 tails occurred .$

Pg 2 Pg 3 Pg 4 Pg 5 Pg 6 Pg 7 Pg 8 Pg 9 Pg 10 Pg 11

Contact: info@tinkutara.com