Between 1872 and 2000, stock prices rose in 74% of the years (m. hulbert, the stock market   1  answer below »

between 1872 and 2000, stock prices rose in 74% of the years (m. hulbert, the stock market must rise in 2002? think again, the new york times, december 6, 2001, business, p. 6). based on this information, and assuming a binomial distribution, what do you think the probability is that the stock market will rise

a next year b the year after next c in four of the next 5 years d in none of the next 5 years e for this situation what assumption of the binomial distribution might not be valid?

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

Solve the triangle. a = 21°, c = 105°, c = 5

What is 1.5% of 120 or what number is 1.5% of 120