Question
1) According to a recent survey, 30% of credit card holders pay off their balances in full each month. If a random sample of 400
1) According to a recent survey, 30% of credit card holders pay off their balances in full each month. If a random sample of 400 credit card holders is taken, what is the probability that
A) At least 110 of them pay off their balances in full each month?
B) At least 125 and but less than140 of them pay off their balances in full each month?
2) The daily returns on a portfolio are normally distributed with a mean of 0.001 and a standard deviation of 0.002.
A) What is the probability that the daily returns on that portfolio are positive for at least 60 out of the next 100 days?
B) What is the probability that the average return for the portfolio over the next 100 days exceeds 0.0015?
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Essentials of Business Analytics
Authors: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
2nd edition
1305627733, 978-1305861817, 1305861817, 978-0357688960, 978-1305627734
