Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1. estimation of mean monthly rentals

a) suppose we consider the following data on monthly rentals: 980, 1230, 1320, 1440, 1180, 1050, 1520, 1630, 880, 920. Suppose, further, that the landlord association claims that the true average rental of a low income 3 ½ room apartments is $1100. The housing authority believes that the average rental is higher. Let the null hypothesis be the landlord association claim and the alternative hypothesis be the housing authority claim. Doe the data support the landlord's association claim? What would you report to the housing authority?

b) Suppose that a sample of 10,000 apartments yielded the following results: x¯=1110, S=250. Using this data, what are your conclusion? What would you report to the housing authority?

2. Applications to auditing

a) Suppose it is claimed that more efficient record keeping has resulted in a lower error rate in accounting entries than the 3% which has been true in the past. The null hypothesis is that the error rate is 0.03; the alternative hypothesis is that the error rate is greater than 0.03. In a sample of 15 entries, 2 errors were found. Does the data support the claim in the null hypothesis?

b) In a large study of 1000 entries, 40 errors were found. Does the data support the null hypothesis based upon this experience?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M943413

Have any Question? 


Related Questions in Statistics and Probability

The centers for disease control and prevention released a

The Centers for Disease Control and Prevention released a report in 1998 that attributed part of the increase in youth smoking in the 1980s to the use of the cartoon character, Joe Camel, in cigarette advertising. Using ...

A buyer suspects that the factorys claimed life of mean is

A buyer suspects that the factory's claimed life of mean is 3000 hours for these light balls are too high. To check the claim, the factory tests 50 of these light balls and gets a mean lifetime of sample mean = 2988 hour ...

1 what is the central difficulty involved in obtaining

1. What is the central difficulty involved in obtaining simple random samples from large populations? 2. How does cluster sampling solve the practical problems involved in simple random sampling?

In a recent survey of high school seniors a random sample

In a recent survey of high school seniors, a random sample of 1000 females showed that 650 were planning on pursuing a college degree, while a random sample of 1000 females showed that 600 were planning on pursuing a col ...

Locate one article presenting research using polynomial

Locate one article presenting research using polynomial regression. Your task now is to critique the appropriateness, utility, alternatives, strengths, and weaknesses of the use of statistics to support the hypotheses of ...

Many grocery stores and large retailers such as wal-mart

Many grocery stores and large retailers such as Wal-Mart and K-Mart have installed self checkout systems so shoppers can scan their own items and cash out themselves. How do customers like this service and how often do t ...

The mean incubation time for a type of fertilized egg kept

The mean incubation time for a type of fertilized egg kept at 100.7° F is 22days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 2 days. (a) The probability that a r ...

I love juliet and i know that juliet loves me but i do not

I love Juliet, and I know that Juliet loves me, but I do not know if Juliet knows that I love her. Provide an Aumann model of incomplete information that describes this situation, and specify a state of the world in that ...

1 a successive independent survey design and a longitudinal

1. A successive independent survey design and a longitudinal survey design both examine changes in responses over time. How do they differ in their approach? 2. Distinguish between demographic and epidemiological researc ...

A special industrial battery must have a life of at least

A special industrial battery must have a life of at least 500 hours. A hypothesis test is to be conducted with a 0.04 level of significance. If the batteries from a particular production run have an actual mean use life ...

  • 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