An investor has six stocks that she follows each day. The random variable being studied is X, the number of stocks that increases in value each day. The probability function for this variable is shown below. Find the probability that on a given day, majority of the stocks will increase in value. A. Find th e pro ability that on a ai an day
An investor has six stocks that she follows each day. The random variable being studied is X, the number of stocks that increases in value each day. The probability function for this variable is shown below. Find the probability that on a given day, majority of the stocks will increase in value. A. Find th e pro ability that on a ai an day
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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Transcribed Image Text:1. An investor has six stocks that she follows each day.
The random variable being studied is X, the number of
stocks that increases in value each day. The probability
function for this variable is shown below.
A. Find the probability that on a given day,
majority of the stocks will increase in value.
В.
Find the probability that on a given day,
minority of the stocks will increase in value.
1
4
f(x)
0.06
0.57215 0.0023 0.02210.00345
0.09
0.25
2. A census was conducted at a prison. All prisoners were
asked how many tattoos they had which will serve as
random variable X. The table below shows the
probability distribution for random variable X.
Find the probability of selecting a person that
has at most 2 tattoos.
А.
Find the probability of selecting a person that
has at least 2 tattoos.
В.
1
2
4
f(x)
0.402
0.078
0.009
0.128
0.200
0.183
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