Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Determination of Sample Size.

A two-lane highway with a posted speed limit of 45 miles per hours is located just outside a small 40 homes subdivision. The residents of neighbourhood are concerned that the speed of cars on the highway is excessive and want an estimate of the population speed of the cars on the highway. Assume the population standard deviation speed of vehicles on the highway is known to be 8 miles per hour, based on past studies. How large a sample is required to approximation the mean speed with a margin of error equal to 2 miles per hour with 90 percent confidence?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M919820

Have any Question? 


Related Questions in Statistics and Probability

1 how does the sample size influence the extent to which

1. How does the sample size influence the extent to which the sample data can be used to accurately estimate population parameters? 2. What statistics are used to indicate how accurately the sample data can predict popul ...

A researcher found a significant relationship between a

A researcher found a significant relationship between a student's IQ, x1, grade point average, x2, and the score, y, on the verbal section of the SAT test. The relationship can be represented by the multiple regression e ...

Digital data are transmitted as a sequence of signals that

Digital data are transmitted as a sequence of signals that represent 0s or 1s. Suppose that such data are being transmitted to a satellite and then relayed to a distant site. Suppose that due to electrical interference i ...

1 what is the range and why is it not ideal as an index of

1. What is the range, and why is it not ideal as an index of variability? 2. Give a definition of variance, then explain how you would calculate it. 3. How does variance differ from the total sum of squares?

Two population meansa tomato farmer with a very large farm

Two Population Means A tomato farmer with a very large farm of approximately 2200 acres had heard about a new type of rather expensive fertilizer which would supposedly significantly increase his production. The frugal f ...

The mathematics faculty at a college consists of 6

The mathematics faculty at a college consists of 6 professors, 9 associate professors, 7 assistant professors, and 12 instructors. If one faculty member is randomly selected, find the probability of choosing a professor ...

1 whats so bad about making a type i error2 how does the

1. What's so bad about making a Type I error? 2. How does the Bonferroni adjustment control for Type I error when many statistical tests are conducted? 3. Why do researchers use ANOVA rather than t-tests to analyze data ...

Hello kitty company claims that the proportion of its

Hello Kitty Company claims that the proportion of its employees investing in individual investment accounts is higher than national proportion of 50%. A survey of 100 employees in Hello Kitty Company indicated that 58 of ...

In retrospect how might the united states under the truman

In retrospect, how might the United States under the Truman administration have handled the situation differently? How would you characterize the current situation and how might our relationship with the largest survivor ...

Among the best companies to work for in the us 33

Among the best companies to work for in the US, 33% experienced double digit job growth, 49% experienced single digit growth, and 18% experienced no growth or decline. A closer examination of the 30 companies that make u ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen