Does sample data indicate that mean account balance declined
With many other options available, customers no longer let their money sit in a checking account. For many years the mean checking balance has been $1,600. Does the sample data indicate that the mean account balance has declined from this value?
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How does regulatory agencies control the profitability of an organization?
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the given categories is 18% for the under 26 group, 39% for the group, 31% for the 45-65 group, and 12% for the group over 65. Find the critical value to test the claim that all ages have purchase rates proportional to their driving rates.
Develop a 95% confidence interval for the proportion of customers using these cards. On the basis of the confidence interval, is it reasonable to conclude that more than half of the customers use a debut card?
For many years the mean checking balance has been $1,600. Does the sample data indicate that the mean account balance has declined from this value?
Write an article critique (this is a paper stating what you agree with, disagree with and and how you can better the study). Give suggestion on how to deal with the threats of the issues in the article. Give weaknesses of the article and how the stud
Test the null hypothesis that population variance is $100 dollars against an alternative that it is greater than $100. Assume = 0.05.
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Is there sufficient evidence to conclude that the mean number of transactions per customer is more than 10 per month? Could the advertising agency say the mean is more than 9 per month?
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