Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Select the right sample size for a simple random sample.

The travel-5 largest cities in the United States are reported in the 2003 Information Please Almanac. Presume that a preliminary simple random sample of residents of San Francisco is used to develop a planning value of 6.25 minutes for the population standard deviation.

a) If we need to estimate the populations mean travel-to-work time for San Francisco residents with a margin of error of 2 minutes what sample size must be used? Assume 95% confidence.

b) If we need to estimate the populations mean travel-to-work time San Francisco residents with a margin of error of 1 minute what sample size should be used? Presume 95% confidence.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M923378

Have any Question? 


Related Questions in Statistics and Probability

Suppose there are three bills in a wallet one of the bills

Suppose there are three bills in a wallet. One of the bills is a $1 bill, one is a $5 bill, and the third is a $10 bill. You select two bills at random without replacement from the wallet, and note the value of the bills ...

In a clinical study of an allergy drug 103 of the 202

In a clinical study of an allergy drug, 103 of the 202 subjects reported experiencing significant relief from their symptoms. At the 0.05 significance level, test the claim that more than half of all those using the drug ...

Question at the first state bank the average savings

Question: At the first state bank the average savings account balance in 2004 was $1300 with a standard deviation of $80. A random sample of 45 savings account balances for 2005 yielded a mean of $1350. At the alpha=01 s ...

Consider a repeated game with standard information where

Consider a repeated game with standard information, where each player maximizes his expected 8-discounted average payoff, for some 8 that is close to but less than 1. Payoffs at each round depend on the players' moves as ...

If the results of a t-test lead you to reject the null

If the results of a t-test lead you to reject the null hypothesis, what is the probability that you have made a Type II error?

What is the probability that a customer who bought an item

What is the probability that a customer who bought an item at regular price purchased the extended warranty? Purchased extended warranty of regular price- 0.21 Purchased extended warranty of sale price - 0.14 Did not pur ...

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?

What issues did the third world radicalism address how

What issues did the third world radicalism address? How successful were their leaders in implementing their goals? Answer has to be a page minimum

Researchers are interested in determining if men and womens

Researchers are interested in determining if men and women's hearts tend to be different sizes. In a sample of 12 males, the mean diameter of the heart was 13.21 cm with a standard deviation of 1.05. Among 9 females, the ...

Under what conditions is a grouped frequency distribution

Under what conditions is a grouped frequency distribution more useful as a means of describing a set of scores than a simple frequency distribution? Why do researchers often add relative frequencies to their tables?

  • 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