English
Tamil Nadu Board of Secondary EducationHSC Commerce Class 12

Choose the correct alternative: If the random variable takes negative values, then the negative values will have - Business Mathematics and Statistics

Advertisements
Advertisements

Question

Choose the correct alternative: 

If the random variable takes negative values, then the negative values will have

Options

  • positive probabilities

  • negative probabilities

  • constant probabilities

  • difficult to tell

MCQ

Solution

positive probabilities

shaalaa.com
Random Variable
  Is there an error in this question or solution?
Chapter 6: Random Variable and Mathematical expectation - Exercise 6.3 [Page 142]

APPEARS IN

Samacheer Kalvi Business Mathematics and Statistics [English] Class 12 TN Board
Chapter 6 Random Variable and Mathematical expectation
Exercise 6.3 | Q 15 | Page 142

RELATED QUESTIONS

Two balls are chosen randomly from an urn containing 6 red and 8 black balls. Suppose that we win ₹ 15 for each red ball selected and we lose ₹ 10 for each black ball selected. X denotes the winning amount, then find the values of X and number of points in its inverse images


The discrete random variable X has the probability function

X 1 2 3 4
P(X = x) k 2k 3k 4k

Show that k = 0 1


The length of time (in minutes) that a certain person speaks on the telephone is found to be random phenomenon, with a probability function specified by the probability density function f(x) as 
f(x) = `{{:("Ae"^((-x)/5)",",  "for"  x ≥ 0),(0",",  "otherwise"):}`
What is the probability that the number of minutes that person will talk over the phone is (i) more than 10 minutes, (ii) less than 5 minutes and (iii) between 5 and 10 minutes


What do you understand by continuous random variable?


Describe what is meant by a random variable


Explain the terms probability Mass function


Explain the terms probability distribution function


Choose the correct alternative:

A variable that can assume any possible value between two points is called


The probability function of a random variable X is given by
p(x) = `{{:(1/4",",  "for"  x = - 2),(1/4",",  "for"  x = 0),(1/2",",  "for"  x = 10),(0",",  "elsewhere"):}`
Evaluate the following probabilities
P(X < 0)


The probability density function of a continuous random variable X is
f(x) = `{{:("a" + "b"x^2",",  0 ≤ x ≤ 1),(0",",  "otherwise"):}`
where a and b are some constants. Find Var(X)


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×