Calculate the probability, Mathematics

Assignment Help:

Calculate the Probability

A bag contains 80 balls of such 20 are red, 25 are blue and 35 are white.  A ball is picked at random what is the probability that the ball picked is as:

(i)  Red ball

(ii) Black ball

(iii) Red or Blue ball.

Solution

(i) Probability of a red ball = number of red ball in the bag/total balls in the bag

= P(R)

= 20/80

= 1/4

(ii) Probability of black ball =  number of red ball in the bag/total balls in the bag

= P (B)

= 0/80

= 0 

(iii) P(R or B) = 20/80 or 25/80 = 20/80 + 25/80

=  9/16

Note: in probability or is replaced by a plus (+) sign.  Look addition rule.


Related Discussions:- Calculate the probability

Assignment, Is there any assignment work available for mathematics?

Is there any assignment work available for mathematics?

Produce list containing m-vectors delta and lambda, The logarithm of the Po...

The logarithm of the Poisson mixture likelihood (3.10) can be calculated with the following R code: sum(log(outer(x,lambda,dpois) %*% delta)), where delta and lambda are m-ve

Find out the mean wait in line - probability, Example of Probability I...

Example of Probability Illustration:  It has been determined that the probability density function for the wait in line at a counter is specified by, In which t is the

Determine the quotient and remainder , Let a = 5200 and b = 1320. (a) If...

Let a = 5200 and b = 1320. (a) If a is the dividend and b is the divisor, determine the quotient q and remainder r. (b) Use the Euclidean Algorithm to find gcd(a; b). (c)

Laws of set algebra, Laws of Set Algebra From the given Venn diagram w...

Laws of Set Algebra From the given Venn diagram where T is the universal set and A its subset that we can deduce a number of laws as: i. A υ Ø = A ii. A υ T = T

How much interest will she have made after 4 years, Celine deposited $505 i...

Celine deposited $505 into her savings account. If the interest rate of the account is 5% per year, how much interest will she have made after 4 years? Use the formula F = 9/5

Sequencing., how to select out time for m2

how to select out time for m2

Why x and y are simplifying expressions, Why x and y are Simplifying Expres...

Why x and y are Simplifying Expressions? You're doing algebra now, and you know you're going to see x's and y's. But before we work with x's and y's, we'll explore why we use t

Profit, A wholesaler allows a discount of 20% on the list price to a retail...

A wholesaler allows a discount of 20% on the list price to a retailer. The retailer sells at 5% discount on the list price.If a customer paid Rs 114 for an article,what profit is m

Graphical method for interpolation, Graphical Method Whil...

Graphical Method While drawing the graph on a natural scale, the independent variables are marked along the horizontal line and corresponding dependen

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd