Confidence Intervals Fill in the blank: As the level of confidence increases, the accuracy of your estimate_________If I am dealing with 45 degrees of freedom (df) and a one sample t-test, then I can assume that my sample size is n=_____If my sample size n=6, then I am dealing with how many degrees of freedom?_______Using the Table Family of T-distributions, answer the following:Working at 95% confidence with two-tails and n=6, identify the corresponding critical value_______Woking at 95% confidence with one tail and n=130, identify the corresponding critical value_______Woking at 99% confidence with two tails and n=59, identify the corresponding critical value_______Build a confidence Interval: Five hundred (500) people attended the Montreal Art Fair. Information was collected from a random sample of 29 visitors and indicates an average amount of money spent per person of $38.75, with a sample standard deviation of $6.33.Based on this information, develop a 99% confidence interval to provide an estimate of the mean expenditure per person for the entire population of visitors.Show All of your calculationsAnswer: The estimate of the true mean of the population expenditure per person falls somewhere between $______ and $_______ .

The confidence interval when n is less than 30 and unknown population standard deviation σ is given…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Confidence Intervals

Fill in the blank:

As the level of confidence increases, the accuracy of your estimate_________
If I am dealing with 45 degrees of freedom (df) and a one sample t-test, then I can assume that my sample size is n=_____
If my sample size n=6, then I am dealing with how many degrees of freedom?_______
Using the Table Family of T-distributions, answer the following:
Working at 95% confidence with two-tails and n=6, identify the corresponding critical value_______
Woking at 95% confidence with one tail and n=130, identify the corresponding critical value_______
Woking at 99% confidence with two tails and n=59, identify the corresponding critical value_______

Build a confidence Interval:

Five hundred (500) people attended the Montreal Art Fair. Information was collected from a random sample of 29 visitors and indicates an average amount of money spent per person of $38.75, with a sample standard deviation of $6.33.

Based on this information, develop a 99% confidence interval to provide an estimate of the mean expenditure per person for the entire population of visitors.

Show All of your calculations
Answer: The estimate of the true mean of the population expenditure per person falls somewhere between $______ and $_______ .

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