County officials are interested in dog breeders in the county. They collect census data and create...
County officials are interested in dog breeders in the county. They collect census data and create a probability distribution.
| Number of Dog Types | P(X) |
| 1 | 0.55 |
| 2 | 0.2 |
| 3 | 0 |
| 4 | 0.2 |
| 5 | 0.05 |
Find the expected number of dog-types in the county. Answer with a simplified fraction.
Homework Answers
Solution :
GIVEN TABLE
| Number of Dog Types | P(X) |
| 1 | 0.55 |
| 2 | 0.2 |
| 3 | 0 |
| 4 | 0.2 |
| 5 | 0.05 |
expected value = E(X) = 
X * P(X)
= 1 *0.55 + 2 *0.2 + 3 *0 + 4 *0.2 +5*0.05
= (0.55 +0.4 +0 + 0.8+0.25)
= 2
Add Answer to:
County officials are interested in dog breeders in the county.
They collect census data and create...
census data doe a certain county show that 19% of the adult residents are hispanic. suppose 72 people are called for ju...
census data doe a certain county show that 19% of the adult
residents are hispanic. suppose 72 people are called for jury duty
and only 9 of them are Hispanic. Does this allarent
under-representation of Hispanics call in to question the fairness
of the jury selection system?
Census data for a certain county show that 19% of the adult residents are Hispanic. Suppose 72 people are called for jury duty and only 9 of them are Hispanic. Does this apparent...
Applied and Computational Questions 1. Pairs of random numbers (r, y) a. How many different pairs...
Applied and Computational Questions 1. Pairs of random numbers (r, y) a. How many different pairs are possible? are generated. X and Y are integers between 0 and 5 inclusive. a random variable W is defined to equal the absolute value of the difference between X b. Suppose and Y. How many distinct values are possible for W? Give the pair of dice is rolled once. 2. Let x represent the number of times a one appears when a probability...
A store sells bags of dog food. Let X be the number of bags sold to...
A store sells bags of dog food. Let X be the number of bags sold to the next customer. The probability distribution for X is given below. Find the variance for the number of bags sold. Give your answer to four decimal places and do not give units. x 1 2 3 4 5 P(X=x) 0.52 0.37 0.06 0.04 0.01
After analysing data for several months, the owner of an appliance shop produced the following jo...
After analysing data for several months, the owner of an appliance shop produced the following joint probability distribution of the number of washing machines (X) and dishwashers (Y) sold daily: Washing machines (X) Dishwashers 0 0.05 0.14 0.13 0.07 0.19 0.08 2 0.09 0.2 0.04 Which one of the following computations is incorrect? (1) The possible number of washing machines as well as dishwashers sold per day can be 0 or 1 or 2 or 3 or 4 (2) The...
The accuracy of a census report on a city in southern California was questioned by some...
The accuracy of a census report on a city in southern California
was questioned by some government officials. A random sample of
1215 people living in the city was used to check the report, and
the results are shown below.
Ethnic
Origin
Census
Percent
Sample
Result
Black
10%
128
Asian
3%
45
Anglo
38%
478
Latino/Latina
41%
492
Native American
6%
60
All others
2%
12
Using a 1% level of significance, test the claim that the census
distribution and...
a) Consider the following data on a variable that has Bernoulli distribution: X P (X) 0...
a) Consider the following data on a variable that has Bernoulli distribution: X P (X) 0 0.3 1 0.7 Find the Expected value and the variance of X. And E(X)-X Px) b) Consider the following information for a binomial distribution: N number of trials or experiments 5 x- number of success 3 Probability of success p 0.4 and probability of failure 1-p 0.6 Find the probability of 3 successes out of 5 trials: Note P(x) Nox p* (1-p)Note: NcN!x! (N-x)!...
4 6 0 The data given below show the number of overtime hours worked in one...
4 6 0 The data given below show the number of overtime hours worked in one week per employee. Use the data to complete parts (a) and (b). Overtime hours 0 1 2 3 5 Employees 5 12 26 59 46 25 15 (a) Construct a probability distribution (b) Graph the probability distribution using a histogram and describe its shape. (a) Construct the probability distribution by completing the table below. 0 2 3 5 P(x) (Round to three decimal places...
Problem 4 A bailet instructor is interested in knowing what percent of each year's class will...
Problem 4 A bailet instructor is interested in knowing what percent of each year's class will continue on to the next, so that she can plan what classes to offer. Over the years, she has established the following probability distribution. (Let X the number of years a student will study ballet with the teachec, and Px) the probability that a student will study ballet for x years) Expand All x Pa) 2 0.2 0.2 0.25 0.05 6 0.1 7 0.15...
Use the probability distribution for the random variable x to answer the question. х 0 1...
Use the probability distribution for the random variable x to answer the question. х 0 1 2 3 4 5 p(x) 0.3 0.2 0.05 0.15 0.25 0.05 Find u, 02, and o. (Round your standard deviation to two decimal places.) H = 0.2 x 02 = x
SCAN will be alive at Je of the three we of age 20 is ali sare...
SCAN will be alive at Je of the three we of age 20 is ali sare indepen access probat Chapter 53 - Mean (Expected Value) and Stord Deviation of Probability is BUS210 Name: Date Class Time: MWE The Weighted Mennor Expected Value of random variable X is EX) > 16) un in Table presents the not because th e to determ "I by part The Variance, and Standard Deviation, a of Xare 0? = VAR(X) = (x-2) (0 O SD...
census data doe a certain county show that 19% of the adult
residents are hispanic. suppose 72 people are called for jury duty
and only 9 of them are Hispanic. Does this allarent
under-representation of Hispanics call in to question the fairness
of the jury selection system?
Census data for a certain county show that 19% of the adult residents are Hispanic. Suppose 72 people are called for jury duty and only 9 of them are Hispanic. Does this apparent...
Applied and Computational Questions 1. Pairs of random numbers (r, y) a. How many different pairs are possible? are generated. X and Y are integers between 0 and 5 inclusive. a random variable W is defined to equal the absolute value of the difference between X b. Suppose and Y. How many distinct values are possible for W? Give the pair of dice is rolled once. 2. Let x represent the number of times a one appears when a probability...
After analysing data for several months, the owner of an appliance shop produced the following joint probability distribution of the number of washing machines (X) and dishwashers (Y) sold daily: Washing machines (X) Dishwashers 0 0.05 0.14 0.13 0.07 0.19 0.08 2 0.09 0.2 0.04 Which one of the following computations is incorrect? (1) The possible number of washing machines as well as dishwashers sold per day can be 0 or 1 or 2 or 3 or 4 (2) The...
The accuracy of a census report on a city in southern California
was questioned by some government officials. A random sample of
1215 people living in the city was used to check the report, and
the results are shown below.
Ethnic
Origin
Census
Percent
Sample
Result
Black
10%
128
Asian
3%
45
Anglo
38%
478
Latino/Latina
41%
492
Native American
6%
60
All others
2%
12
Using a 1% level of significance, test the claim that the census
distribution and...
a) Consider the following data on a variable that has Bernoulli distribution: X P (X) 0 0.3 1 0.7 Find the Expected value and the variance of X. And E(X)-X Px) b) Consider the following information for a binomial distribution: N number of trials or experiments 5 x- number of success 3 Probability of success p 0.4 and probability of failure 1-p 0.6 Find the probability of 3 successes out of 5 trials: Note P(x) Nox p* (1-p)Note: NcN!x! (N-x)!...
4 6 0 The data given below show the number of overtime hours worked in one week per employee. Use the data to complete parts (a) and (b). Overtime hours 0 1 2 3 5 Employees 5 12 26 59 46 25 15 (a) Construct a probability distribution (b) Graph the probability distribution using a histogram and describe its shape. (a) Construct the probability distribution by completing the table below. 0 2 3 5 P(x) (Round to three decimal places...
Problem 4 A bailet instructor is interested in knowing what percent of each year's class will continue on to the next, so that she can plan what classes to offer. Over the years, she has established the following probability distribution. (Let X the number of years a student will study ballet with the teachec, and Px) the probability that a student will study ballet for x years) Expand All x Pa) 2 0.2 0.2 0.25 0.05 6 0.1 7 0.15...
Use the probability distribution for the random variable x to answer the question. х 0 1 2 3 4 5 p(x) 0.3 0.2 0.05 0.15 0.25 0.05 Find u, 02, and o. (Round your standard deviation to two decimal places.) H = 0.2 x 02 = x
SCAN will be alive at Je of the three we of age 20 is ali sare indepen access probat Chapter 53 - Mean (Expected Value) and Stord Deviation of Probability is BUS210 Name: Date Class Time: MWE The Weighted Mennor Expected Value of random variable X is EX) > 16) un in Table presents the not because th e to determ "I by part The Variance, and Standard Deviation, a of Xare 0? = VAR(X) = (x-2) (0 O SD...
Most questions answered within 3 hours.
-
the following reaction occurs in a balloon containing
N2O2 gas
N2O4(g)=2NO2(g)
will the volume of the...
asked 9 minutes ago -
answer the questions throughout this program
public class Day implements Comparable {
Private Boolean atWork;...
asked 16 minutes ago -
This is C++ code for parking fee management program
#include <iostream>
#include <iomanip>
using namespace std;...
asked 27 minutes ago -
The free energy change for the following reaction at 25 °C, when
[Sn2+] = 1.17 M...
asked 2 hours ago -
An MNE is this kind of industry when competition in one country
is essentially independent of...
asked 3 hours ago -
. For this set of questions, determine what
proportion of a normal distribution is located betweeneach...
asked 4 hours ago -
A college student is employed as a door-to-door newspaper
salesman. Historical data suggests that the student...
asked 5 hours ago -
MATLAB HW 11 problem using Switch Case and Input commands
Write a script file that calculates...
asked 4 hours ago -
Considering gravitational time dilation, calculate the time that
passes in Earth’s surface while 1 hour passes...
asked 5 hours ago -
Minitab Problem: Take the Lake Hume June rainfall data and find
use the processes outlined in...
asked 6 hours ago -
X Company is trying to decide whether to continue using old
equipment to make Product A...
asked 6 hours ago -
IN PYTHON ONLY !! Program 2: Re-work
program #5 (WeeklyHours) from the previous assignment such that...
asked 7 hours ago