What is the mean-variance and standard deviation

Assignment Help Basic Statistics
Reference no: EM132029563

A close friend of mine became very ill and couldn't work for several months. Naturally, this put a big strain on his family financially. I decided to start a GoFundMe page to help with his medical costs. After some research, I found that donations for a GoFundMe for this type of situation are normally distributed with a mean of $100 and a standard deviation of $60. I was able to reach almost 5,000 people, and actually received contributions from 2,550 of them. Let S be the aggregate donations given by the 2,550 individuals.

a. What is the mean, variance, and standard deviation of the aggregate donation, S?

b. What is the probability that the aggregate donation, S, exceeds $260,000?

Reference no: EM132029563

Questions Cloud

The variance of the market portfolio daily returns : The variance of the market portfolio daily returns is 0.00025. Fill out the variance-covariance matrix for ABC and XYZ using the market model.
Mean of the relevant distribution : Estimate the number of workers in the sample who are union members by giving the mean of the relevant distribution
Examine the systems and structures of an organization : To initiate this project, this week you examine the systems and structures of an organization with which you are familiar.
Portfolio is supposed to be designed to exactly emulate : Please attach your S & P 500 Portfolio here. This portfolio is supposed to be designed to exactly emulate the S & P 500. Allocate your capital accordingly.
What is the mean-variance and standard deviation : a. What is the mean, variance, and standard deviation of the aggregate donation, S?
What is their approach to sustainability development : How would you evaluate its strength? What is their mission, goal, and values? What is their approach to sustainability development?
Compute the covariance : Compute the covariance. Compute the correlation coefficient.
Consider the frequency distribution shown : Consider the frequency distribution shown. Calculate the sample mean. Calculate the sample variance and sample standard deviation
Determine the year in which the balance of sinking fund : Determine the year in which the balance of the sinking fund will be sufficient to repay the loan.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd