6. (1) The random variable X follows a Binomial distribution with parameters n and p. Given that X has mean 3 and variance 2-1, find, (a) the values of n and p. (b) P(X < 4).

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
icon
Concept explainers
Question

Answer detailly 

6. () The random variable X follows a Binomial distribution with parametersn and
P.
Given that X has mean
3 and variance 2 1, find,
(a) the values of n and p.
(b) P(X < 4).
(ii) 20 % of the students in a certain high school have all the required text books. A random sample of 400
students is selected from the high school.
(c) Determine the mean and variance of the number of students having the required textbooks.
Use the normal distribution as an approximation to the Binomial distribution to find, to four decimal
places, the probability that out of these 400 students,
(d) at least 70 are in possession of all the required textbooks,
(e) between 60 and 100 students are in possession of all the required textbooks,
(f) exactly 90 students are in possession of all the required textbooks.
Transcribed Image Text:6. () The random variable X follows a Binomial distribution with parametersn and P. Given that X has mean 3 and variance 2 1, find, (a) the values of n and p. (b) P(X < 4). (ii) 20 % of the students in a certain high school have all the required text books. A random sample of 400 students is selected from the high school. (c) Determine the mean and variance of the number of students having the required textbooks. Use the normal distribution as an approximation to the Binomial distribution to find, to four decimal places, the probability that out of these 400 students, (d) at least 70 are in possession of all the required textbooks, (e) between 60 and 100 students are in possession of all the required textbooks, (f) exactly 90 students are in possession of all the required textbooks.
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Points, Lines and Planes
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman