A credit card company takes a random sample of 100 cardholders to see how much they charged
Question:
A computer program found that the resulting 95% confidence interval for the mean amount spent in March 2011 is (-$28,366.84, $90,691.49). Explain why the analysts didn't find the confidence interval useful, and explain what went wrong.
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Related Book For
Stats Data and Models
ISBN: 978-0321986498
4th edition
Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock
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