Expected values of winnings
In a game, you have a 20% chance of winning $20, a 10% chance of winning $15, a 20% chance of winning $10 and a 50% chance of losing $18. What are the expected values of your winnings?
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How does the normality requirement for a hypothesis test of a claim about a standard deviation differ from the normality requirement for a hypothesis test of a claim about a mean?
Phil can afford $200 a month for 5 years for a car loan. If the annual interest rate is 7.5 percent, how much can he afford to borrow to purchase a car?
A 0.145-kg baseball pitched at 37.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 50.5 m/s . If the contact time between bat and ball is 3.20×10?3 , calculate the average force between the ball and bat during cont
The standard deviation of mosquitos caught in the entire population of traps is 150 mosquitos. What is the 99% confidence interval for the true mean number of mosquitos caught in all mosquito traps?
Suppose a third project will cost $20,000 today and yield a return of $2,500 a year indefinitely. What is the present value of the project? What is the present value if the interest rate increases to 20 percent?
Plot a Lorentzian emission line centered at 10 GHz having a half width at half maximum corresponding to 225 MHz which is approximately the Doppler broadening at room temperature of rubidium transition at 780 nm.
If Kitty's fund earns the same returns in the future as in the past, how old will she be when she becomes a millionaire? Round your answer to two decimal places.
A rod 14.0 cm long is uniformly charged and has a total charge of 22.0 C. Determine (a) the magnitude and (b) the direction of the electric field along the axis of the rod at a point 36.0 cm from its center
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