Answered: Given that X~Bin(n, 0.4), and that the…

Math

Statistics

Given that X~Bin(n, 0.4), and that the E[X] = 4.8, what is the value of n? a. 12 b. 4.8 O c. 10 d 0.4

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

please answer these question within 20 minutes

1.Given that X~Bin(n, 0.4), and that the E[X] = 4.8, what is the value of n? a. 12 b. 4.8 O c. 10 d 0.4

2. Given that X-N(12,9), and that samples of size 64 are taken, what is the standard error of the sample means? a. 9 b. 0.375 c. 2.67 d. 0.14

A random variable, X, has a discrete probability distribution as shown in the table belove
5
0.3
X = x
P(X = x)
1
0.1
What is P(X ≤ 2)?
Answer:
3
0.4
7
0.2
Time

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