Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

describe 95% confidence interval for the population mean.

1. Private colleges as well as universities rely on money contributed by individuals and corporations for their operating expenses. Much of this funds is put into a fund called an endowment and the college spends only the interest earned by the fund. A recent survey of 8 private colleges in the United States revealed the following endowments (in millions of dollars) - 60.2, 47.0, 235.1, 490.0, 122.6, 177.5, 95.4, and 220.0. Summary statistics yield = 180.975 and s = 143.042. Compute a 95% confidence interval for the mean endowment of all the private colleges in the United States assuming a normal distribution for the endowments.

a)  $180.975± $94.066

b)  $180.975± $99.123

c)  $180.975± $116.621

d)  $180.975± $119.586

2. An economist is interested in reading the incomes of consumers in a particular region. The population standard deviation is known to be $1000. An arbitrary sample of 50 individuals resulted in an average income of $15,000. describe what is the width of the 90% confidence interval?

a) $232.60

b) $364.30

c) $465.23

d) $728.60

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923370

Have any Question? 


Related Questions in Statistics and Probability

What were the causes of the cold war also describe the

What were the causes of the Cold War? Also, describe the steps that the USA took to meet the perceived Soviet threat during the 1940s, '50s and '60s. Be sure to include the following topics: Iran crisis of 1946 Iron Curt ...

Starting in 1998 a series of credit card usage studies have

Starting in 1998, a series of credit card usage studies have been performed by Sallie Mae, a major provider of educational loans and savings programs. In a recent pilot study, a random pool of 122 loan applicants attendi ...

44nbspof a certain countrys voters think that it is too

44% of a certain country's voters think that it is too easy to vote in their country. You randomly select 12 likely voters. Find the probability that the number of likely voters who think that it is too easy to vote is ( ...

Suppose that 3 of all adults suffer from diabetes and that

Suppose that 3% of all adults suffer from diabetes and that 28% of all adults are obese. Suppose also that 2% of all adults both are obese and suffer from diabetes. (a) Find the probability that a randomly chosen adult i ...

Manifest destiny was a powerful force in nineteenth century

"Manifest Destiny was a powerful force in nineteenth century America not only calling for the expansion of the nation physically but also for spreading its ideals to more parts of the world. In what ways was slavery both ...

Part a - excel instructions for chi-square tests carrying

Part A - Excel Instructions for Chi-square Tests Carrying out Chi-square (χ 2 ) tests of independence We are considering prisoner behaviour data. There is a prison with six wings each with 100 prisoners. Prisoner behavio ...

Reading journal assignment stage iifor this portion of the

Reading Journal Assignment Stage II For this portion of the journal, you will create five journal entries, each addressing the prompts given below. Each entry will be one page in length, double spaced, with 12 point font ...

Jolie takes 45 minutes to do her statistics homework if the

Jolie takes 45 minutes to do her statistics homework. If the mean is 38 minutes and the standard deviation is 3, calculate Jolie's z score. Once calculated, interpret your findings in terms of Jolie's performance.

Determine the power for the following test of hypothesis h0

Determine the power for the following test of hypothesis. H0 : μ = 950 vs. H1 : μ ≠ 950, given that μ = 1,000, α = 0.10, σ = 200, and n = 25.

In 4-5 paragraphs describe gender roles how they were

In 4-5 paragraphs describe gender roles (how they were influenced/changed) though out middle ages (with specific examples of people, years etc.)

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

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.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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