Credit card charges. A credit card company takes a random sample of 100 cardholders to see how much they charged on their card last month. A histogram and boxplot are as follows:   A computer program...

Credit card charges. A credit card company takes a random sample of 100 cardholders to see how much they charged on their card last month. A histogram and boxplot are as follows:

A computer program found that the resulting 95% confidence interval for the mean amount spent in March 2005 is (- $28366.84, $90691.49). Explain why the analysts didn’t find the confidence interval useful, and explain what went wrong.