Julian C.

You measure 35 dogs' weights, and find they have a mean weight of 78 ounces. Assume the population standard deviation is 2.8 ounces. Based on this, what is the maximal margin of error associated... more

The cost of visits to physicians' offices follows an exponential distribution with an average of $250 per year per person. A health insurer sells a policy to 800 people with a $100 deductible. How... more

Suppose a family of worms initially contains two worms, a mommy worm and a dady worm.. In any given month, the worms can either have no children, have n new children, or lose m children. Suppose... more

Find E[X] when the density function of X is f (x) =2x, 0≤x ≤1 0, otherwise