Calculate a confidence interval for proportion of business

Assignment Help Applied Statistics

Reference no: EM13909986

1. On the basis of the confidence interval given in Exercise 8.41, is there convincing evidence that a majority of all marketing researchers disapprove of the actions taken in the conflict of interest scenario? Explain.

2. In an article in CA Magazine, Neil Fitzgerald surveyed Scottish business customers concerning their satisfaction with aspects of their banking relationships. Fitzgerald reports that, in 418 telephone interviews conducted by George Street Research, 67 percent of the respondents gave their banks a high rating for overall satisfaction.

a. Assuming that the sample is randomly selected, calculate a 99 percent confidence interval for the proportion of all Scottish business customers who give their banks a high rating for overall satisfaction.

b. Based on this interval, can we be 99 percent confident that more than 60 percent of all Scottish business customers give their banks a high rating for overall satisfaction?

Text Book: Business Statics in Practice By BOWERMAN.

Reference no: EM13909986

Questions Cloud

Write a program to count the number of non-isomorphic : You will write a program to count the number of non-isomorphic simple un-weighted directed graphs with a given number of vertices. The number of vertices will be specified at run time.

Find a confidence interval for the proportion of adults : Find a 95 percent confidence interval for the proportion of all U.S. adults who would say they take part in some form of daily activity to keep physically fit.

What is the npv of the investment : It will be sold for 25,000 at the end of 5 years. Add'l inventory of 11,000 will be required for parts and maintenance of new machine. The company evaluates all projects at this risk level using an 11.99% required rate return. Tax rate is expected..

Calculate a point estimate of percent confidence interval : Find a point estimate of and a 95 percent confidence interval for the proportion of all U.S. television ads that use humor.

Calculate a confidence interval for proportion of business : Assuming that the sample is randomly selected, calculate a 99 percent confidence interval for the proportion of all Scottish business customers who give their banks a high rating for overall satisfaction.

Calculate market value of equity and market value of debt : Calculate the Distance-to-Default (DD) and the Probability-of-Default (PD) on that date and calculate the market value of equity and the market value of debt on 15 July 2010.

Equations for reactions occurring at electrodes : What is the equations for the reactions occurring at the electrodes during electrolysis of the following solutions:

What are the possibilities for arbitrage profits : If there are no transaction costs or taxes what are the possibilities for arbitrage profits and If there is a transaction cost of .25% per transaction are there still possibilities for arbitrage profits?

Solubility of pure nitrogen in water : At 1.00 atm pressure, the solubility of pure oxygen in water is 0.00430g O(2)/100.0g H(2)O, and the solubility of pure nitrogen in water is 0.00190g N(2)/100.0g H(2)O.

User Account

All Pages