English
Tamil Nadu Board of Secondary EducationHSC Commerce Class 12

Mention the properties of bionomial distribution.

Advertisements
Advertisements

Question

Mention the properties of binomial distribution.

Sum
Advertisements

Solution

Properties of Binomial distribution

1. Binomial distribution is symmetrical if p = q = 0.5, It is skew-symmetric if p ≠ q. It is positively skewed if p < 0.5 and it is negatively skewed it p > 0.5.

2. For Binomial distribution, variance is less than mean
Variance npq = (np) q < np

shaalaa.com
Distribution
  Is there an error in this question or solution?
Chapter 7: Probability Distributions - Exercise 7.1 [Page 155]

APPEARS IN

Samacheer Kalvi Business Mathematics and Statistics [English] Class 12 TN Board
Chapter 7 Probability Distributions
Exercise 7.1 | Q 5 | Page 155

RELATED QUESTIONS

If 18% of the bolts produced by a machine are defective, determine the probability that out of the 4 bolts chosen at random exactly one will be defective


Forty percent of business travellers carry a laptop. In a sample of 15 business travelers, what is the probability that 3 will have a laptop?


Derive the mean and variance of poisson distribution


The average number of phone calls per minute into the switchboard of a company between 10.00 am and 2.30 pm is 2.5. Find the probability that during one particular minute there will be exactly 3 calls


If the heights of 500 students are normally distributed with mean 68.0 inches and standard deviation 3.0 inches, how many students have height greater than 72 inches


Hospital records show that of patients suffering from a certain disease 75% die of it. What is the probability that of 6 randomly selected patients, 4 will recover?


Vehicles pass through a junction on a busy road at an average rate of 300 per hour. Find the probability that none passes in a given minute


The annual salaries of employees in a large company are approximately normally distributed with a mean of $50,000 and a standard deviation of $20,000. What percent of people earn less than $40,000?


The annual salaries of employees in a large company are approximately normally distributed with a mean of $50,000 and a standard deviation of $20,000. What percent of people earn more than $75,000


People’s monthly electric bills in Chennai are normally distributed with a mean of ₹ 225 and a standard deviation of ₹ 55. Those people spend a lot of time online. In a group of 500 customers, how many would we expect to have a bill that is ₹ 100 or less?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×