+1-415-315-9853

info@mywordsolution.com

## Statistics

Salesperson visits from house to house to sell her knives. The probability that she makes a sale at a random house is .3. Given that she makes a sale, the sale is worth \$100 with probability .6 and \$200 with probability .4. Suppose that the salesperson visits five houses on a given day.

problem1) Find the probability that she makes exactly two sales?

problem2) Find the probability that she sells exactly \$100 worth of knives?

Querstion3) Given that exactly two visits (out of the five) are sales, find

(a) the probability distribution of her sales value
(b) the expected sales value
(c) the variance and standard deviation of her sales value

problem4) Given that she has sales volume of exactly \$200, find

(a) probability distribution of the number of sales that she makes

(b) expected number of sales that she makes?

Let X, Y, and Z refer to the three random variables. It is given that Var(X) = 4, Var(Y) = 9, and Var(Z) = 16. It is further known that E(X) = 1, E(Y) = 2, and E(Z) = 4. Furthermore E(XY) = 7, E(XZ) = 12, and E(YZ) = 15.

problem5) Find Var(X-Y)

problem6) Find Corr(X,Z)

problem7) Find Cov(2X+Y,4Z)

problem8) Find E(3X+4Y-5Z)

Statistics and Probability, Statistics

• Category:- Statistics and Probability
• Reference No.:- M9735

Have any Question?

## Related Questions in Statistics and Probability

### The time it takes to complete a standardized exam is

The time it takes to complete a standardized exam is normally distributed with a mean of 70 minutes and a standard deviation of 10 minutes. How much time should be allowed for the exam so that 80% of the students will fi ...

### In a recent funding drive in support of classical radio it

In a recent funding drive in support of classical radio, it was announced that 11.35% of the listeners actually donated to the radio station. A survey of 225 listeners found that 10.75% of the listeners had actually dona ...

### Thirteen students were randomly selected from the college

Thirteen students were randomly selected from the College of Public Health and their diastolic blood pressure was tested. The sample mean and standard deviation were 80.9 mmHg and 2.1 mmHg respectively. What is the obtai ...

### Wat were the key political features of the roman republic

What were the key political features of the Roman Republic? How and why did this system of government collapse? Does our republic share any of the weaknesses of the Roman Republic?

### Your company is seeking to forecast demand for the next

Your company is seeking to forecast demand for the next month based on the information given in the following table: Month May June July Aug Oct Sept Oct Nov Dec Demand 40 44 43 45 42 50 48 54 a. (6) Develop a forecast f ...

### Data mining review questions - xlminer labs - cluster

Data Mining Review Questions - XLMiner Labs - Cluster Analysis1. Marketing to Frequent Flyers. The file EastWestAirlinesCluster.xls contains information on 4000 passengers who belong to the airline's frequent flier progr ...

### Thenbspessay approximately 500 to 600 words in length that

The Essay, approximately 500 to 600 words in length, that you will write in the testing lab is as follows: Do these excerpts from Columbus' log provide us with any useful information about the native societies of these i ...

### An economist wants to estimate the mean per capita income

An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. He believes that the mean income is \$23.8, and the standard deviation is known to be \$8.9. How large of a sam ...

### The department of education would like to determine if

The Department of Education would like to determine if there are gender differences in the performance of twins on the state mandated mathematics examination. As a result, they have collected data on twelve sets of twins ...

Please provide answer the question to the fourth decimal place.  I am just checking my answer...  I completed the answers for A and B below, which you need to solve C. Do social shoppers differ from other online consumer ...

• 13,132 Experts

## Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

### Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

### Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

### Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

### Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

### Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen