Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Describe the 95% confidence Interval for one population mean.

1. A examine at a college in the west coast reveals that, historically 45% of their students are minority students. If arbitrary samples of size 75 are selected, 80% of the samples will have less than ______% of minority students.

2. A key department store chain is interested in estimating the average amount its credit card customers spent on their first visit to the chain's new store in the mall. Fifteen credit card accounts were randomly sampled and analysed with the following results:  = $50.50 and s2 = 400. Concept a 95% confidence interval for the average amount its credit card customers spent on their first visit to the chain's new store in the mall assuming that the amount spent follows a normal distribution.

  1. $50.50 ± $9.09
  2. $50.50 ± $10.12
  3. $50.50 ± $11.00
  4. $50.50 ± $11.08

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923366

Have any Question? 


Related Questions in Statistics and Probability

Microsoft word - stat Microsoft Word - STAT Assignment 1.

Microsoft Word - STAT Assignment 1. Anationalrepresentativesurveyofstudentsingrades7-12askedaboutthe experience of these students with respect to sexual harassment. The students were asked whether or not they were harass ...

1 why are researchers often interested in the proportion of

1. Why are researchers often interested in the proportion of total variance that is systematic variance? 2. What would the proportion of total variance that is systematic variance indicate if it were .25? .OO? .98?

A car salesmen claims that a particular make of a car would

A car salesmen claims that a particular make of a car would give a mean mileage of greater than 20mpg. If I ran 10 cars on one gallon of gas each and came up with 10 different results, what statistical formula would I us ...

1 why are psychologists sometimes interested in

1. Why are psychologists sometimes interested in epidemiology? 2. Why do researchers use probability rather than nonprobability samples when doing descriptive research?

A history class is comprised of 8 female and 6 male

A history class is comprised of 8 female and 6 male students. If the instructor of the class randomly chooses 5 students from the class for an oral exam, what is the probability that 2 female students and 3 male students ...

Let a be a matching not necessarily stable and let maom be

Let A be a matching (not necessarily stable), and let MA,Om be the set of men who prefer the women to whom they are matched under A to the women to whom they are matched under the men's courtship matching Om. (a) Prove t ...

Starting in the 10th century movements to reform the church

Starting in the 10th century, movements to reform the church began. Why was the church in need of reform, and what were the consequences of the Gregorian Reforms? How did these reforms change society? 1 and a half page e ...

The following electoral method is used to choose the mayor

The following electoral method is used to choose the mayor of Whoville: Every resident ranks the candidates from most preferred to least preferred, and places this ranked list in a ballot box. Each candidate receives a n ...

1 what are order effects and how does counterbalancing help

1. What are order effects, and how does counterbalancing help us deal with them? 2. Distinguish between treatment, confound, and error variance. 3. Which is worse--confound variance or error variance? Why?

The percentage of people with advanced degrees is 165 on

The percentage of people with advanced degrees is 16.5% on average if 1000 people are randomly selected what is the probability that the percentage of these poeple with advanced degrees is between 17% and 18.5%?

  • 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