Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1.  A population is estimated to have the standard deviation of 10. We want to estimate population mean in 2, with 95 percent level of confidence. How large a sample is needed?

2.  A survey is being planned to find out the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time for each week is 12 hours, with standard deviation of 3 hours. It is desired to estimate the mean viewing time in one-quarter hour. The 95 percent level of confidence is to be employed. How many executives must be surveyed?

3.  Past surveys reveal that 30 percent of tourists going to Las Vegas to gamble throughout a weekend spend more than $ 1,000. The Las Vegas Area Chamber of Commerce wants to update this percentage.

  1. The new study is to employ the 90 percent confidence level. The estimate is to be in 1 percent of population proportion. What is the necessary sample size?
  2. Management said that the sample size determined above is too large. What can be done to reduce the sample? Based on your suggestion refind out the sample size.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921415

Have any Question? 


Related Questions in Statistics and Probability

In a survey of 617males agesnbsp18-64 396 say they have

In a survey of 617males ages 18-64, 396 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the co ...

Paper should be between 800 and 1000 words in length it is

Paper should be between 800 and 1,000 words in length. It is due according to the due date on the course calendar. 1. Drawing on the readings and lectures, name at least three developments or factors that encouraged the ...

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 ...

Prove that if the result of the mens courtship algorithm

Prove that if the result of the men's courtship algorithm yields the same result as the women's courtship algorithm, then this resulting matching is the unique stable matching.

1 in stepwise regression why might a predictor variable

1. In stepwise regression, why might a predictor variable that correlates highly with the criterion variable not enter into the regression equation? 2. Explain how you would use regression analysis to see whether variabl ...

1 what does the reliability coefficient of a measure

1. What does the reliability coefficient of a measure indicate if it is .60? .OO? 1.00? 2. What does a correlation coefficient tell us? Why are correlation coefficients useful when assessing reliability? 3. What are the ...

One study based on responses from 1013 teenagers concluded

One study based on responses from 1013 teenagers concluded that 42% cite grades as their greatest source of pressure. Use .05 significance level to test the claim that fewer than half of all teenagers in the population f ...

A recent report suggested that older people think more

A recent report suggested that older people think more slowly than younger people because they have more information stored in their brains.  Because WeStudyEverything wasn't sure regarding the source of the study, they ...

250 -300 wordsexplain the history behind the black soldier

250 -300 words Explain the history behind the Black Soldier of the Civil War In this forum look beyond the book for information on specific units, soldiers and even the reasons for why Lincoln allowed the African America ...

What tensions emerged in the southwest that threatened to

What tensions emerged in the Southwest that threatened to lead the United States into a war with Mexico? On what grounds did President James K. Polk ask Congress to declare war on Mexico?

  • 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