Find out the variance and standard deviation, Mathematics

Assignment Help:

The probability of a rare disease striking a described population is 0.003. A sample of 10000 was examined. Determine the expected no. suffering from the disease and thus find out the variance and the standard deviation for the above problem

Solution

Sample size n = 10000

P(a person suffering from the disease) = 0.003 = p

∴ expected number of people suffering from the disease

Mean = λ = 10000 × 0.003

            = 30

            = np = ?

Variance = np = 30

Standard deviation = √(np) = √?

                        =  √(30)

                        = 5.477


Related Discussions:- Find out the variance and standard deviation

Normal approximation to binomial to approximate probability, A certain flig...

A certain flight arrives on time 78% of the time. Suppose 1000 flights are randomly selected. Use the normal approximation to the binomial to approximate the probability that a)

MATH HONORS, HOW DO YOU DO BAR DIAGRAMS ANDESTIMATE IT WITH PERCENTS

HOW DO YOU DO BAR DIAGRAMS ANDESTIMATE IT WITH PERCENTS

Bisection method and the newton method, 1. Write two m-files, one for the b...

1. Write two m-files, one for the bisection method and another for Newton's method. 2. Using both the Bisection method and the Newton method answer the following: Include th

NUMERICAL PARTIAL DIFFERENTIAL EQUATIONS, Our objective is solve the follo...

Our objective is solve the following fourth-order BVP: (a(x)u'' )'' = f (x) u(0) = u(1)=0 u(0)' = u(1)'=0 (a) Give the variational formulation of the above BVP. (b) Describe the

Show that the angles subtended at the centre , A circle touches the sides o...

A circle touches the sides of a quadrilateral ABCD at P, Q, R and S respectively. Show that the angles subtended at the centre by a pair of opposite sides are supplementary.

Nun, how do you identify area ??

how do you identify area ??

Complex number, a ,b,c are complex numbers such that a/1-b=b/1-c=c-1-a=k.fi...

a ,b,c are complex numbers such that a/1-b=b/1-c=c-1-a=k.find the value of k

What is the greatest value of the number, Five more than the quotient of a ...

Five more than the quotient of a number and 2 is at least that number. What is the greatest value of the number? Let x = the number. Notice that quotient is a key word for div

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