A box contains n white and m black balls. One ball is added randomly, white with probability p and black with probability 1  p. Then a random ball is taken out from the box. (a) Find the probability that the taken ball ...

Do you have a credit card or use some other form of consumer credit? Identify what you currently use, if any. If you do not use credit, discuss a type of credit that you might consider in the future. What advantages does ...

Doctor wants the estimate the HDL cholesterol of all 20 to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 3 points with 99% confidence assuming o=18.2? Suppose the doctor would b ...

European bonds pay coupons annually, while U.S. bonds pay coupons semiannually. If the coupon rate on a European bond is 12% (annual coupons), what is the comparable coupon rate for a U.S. bond (semiannual coupons) assum ...

A certain diagnostic test is indicative of problems only if a child scores in the lowest 10% of those taking the test (the 10th percentile). If the mean score is 150 with a standard deviation of 30, what would be the dia ...

The Everly Equipment Company's flangelipping machine was purchased 5 years ago for $70,000. It had an expected life of 10 years when it was bought and its remaining depreciation is $7,000 per year for each year of its r ...

A cell phone company offers 15 different voice packages and 15 different data packages. Of those, 6 packages include both voice and data. How many ways are there to choose either voice or data, but not both?

Shekhar plans to invest $1,820 in a mutual fund at the end of each of the next six years. If his opportunity cost rate is 8 percent compounded annually, how much will his investment be worth after the last annuity paymen ...

Sixtyseven percent of adults have looked at their credit score in the past six months. If you select 31 customers, what is the probability that at least 20 of them have looked at their score in the past six months?

A production system has two spares of a critical component that have average uptime 1/lamba = 1 month. Find the probability that the 3 components (the operating one and the two spares) will last more than 6 months. Assum ...

