Develop a 90 percent confidence interval for the population, Ask an Expert

Economics

Marty Rowatti recently assumed the position of director of the YMCA of South Jersey. He would like some current data on how long current members of the YMCA have been members. To investigate, suppose he selects a random sample of 40 current members. The mean length of membership of those included in the sample is 8.32 years and the standard deviation is 3.07 years.

a. What is the mean of the population?

b. Develop a 90 percent confidence interval for the population mean. The previous director, in the summary report she prepared as she retired, indicated the mean length of membership was now "almost 10 years." Does the sample information substantiate this claim?

View complete question

Macroeconomics, Economics

Category:- Macroeconomics
Reference No.:- M9690138

Have any Question?Write your Review or question?

Related Questions in Macroeconomics

Question - jacks faces the following demand function for

Question - Jack's faces the following demand function for its Jack in the Boxes: Q = 13000 - 8P. Jack produces the Jack in the Boxes in two facilities. The cost functions in each facility are: TC1 = 110,000 + 40Q1 + .09Q ...

Question when using ols we assume that the errors are

Question: When using OLS, we assume that the errors are independent (i.e., not serially correlated) and normally distributed with constant variance (i.e., homoscedastic). These assumptions allow us to use the F and t dis ...

Question positions on whether the constitution should be

Question: Positions on whether the Constitution should be amended to require a balanced budget reflect opposing views about whether such an amendment would be an appropriate solution to the problem of persistent federal ...

Principles of macroeconomics assessment - supply and demand

PRINCIPLES OF MACROECONOMICS ASSESSMENT - Supply and Demand, and Equilibrium Analysis Assume: Demand Curve: Q D = 80 - 10P; and Supply Curve: Q S = 10P 1. Using the above information, complete the schedules for Quantity ...

Question topic 2 product or service offered and global

Question: Topic 2: Product or Service Offered and Global Consumption Describe the product or service including brand/logo and packaging. In addition, use the following link, and visit the globalEdge website and describe ...

Question suppose there are two consumers labeled 1 and 2

Question: Suppose there are two consumers, labeled 1 and 2, each of whom has a dollar of money income which can be spent on either private good x or public good g. Assume that the dollar cannot be divided between the two ...

Question principles of macroeconomicsworksheet on keynesian

Question: Principles of Macroeconomics Worksheet on Keynesian Demand Management The economy of Trickstoland is currently producing $450 billion of output, while enduring 12% cyclical unemployment. The natural rate of une ...

Question assume a nissan dealer in the us bought 30 maximas

Question: Assume a Nissan dealer in the U.S. bought 30 Maximas directly from Japan at a cost of $20,000 per car in the fall of 2002. By December 31, 2002, the dealer had sold 10 of these cars for $27,000 each. The remain ...

Question - someone calculated the future worth of his

Question - Someone calculated the future worth of his investment in term of today's dollars. The obtained result was 945, 895. The life of the investment is expected to be 20 years. The average annual inflation rate alon ...

Question - a small island nation is endowed with

Question - A small island nation is endowed with indestructible coconut trees. These trees live forever and no new trees can be planted. Every year $1 million worth of coconuts fall off the trees and can be eaten locally ...

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

Recent Questions

Ask Macroeconomics Expert