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American roulette. The game of American roulette involves spinning a wheel with 38 slots: 18 red, 18 black, and 2 green. A ball is spun onto the wheel and will eventually land in a slot, where each slot has an equal chance of capturing the ball. Gamblers can place bets on red or black. If the ball lands on their color, they double their money. If it lands on another color, they lose their money. Suppose you bet $1 on red. What's the expected value and standard deviation of your winnings?
now that you are familiar with the basic concepts of statistics what are some examples of when you have seen or heard
A certain college gives aptitude tests in the sciences and the humanities to all entering freshmen. If X and Y are, respectively, the proportions of correct answers that a student gets on the tests in the two subjects, the joint probability distr..
If the following expression (5t+5)/(2t+5) is to make sense, the values that t can take must be restricted. State the restriction on it.
Discuss and compare all the forecasting methods presented in this chapter. What are the relative strengths and weaknesses of each method?
95% confidence interval evaluate for proportion of Americans who believe Abraham Lincoln is United States' most outstanding President is 65% to 75%. If more precise estimate is requested, then confidence level.
Calculate the value of the test statistic W.
a bag contains 6 red balls 12 blue balls 7 yellow balls and 4 green balls. gary reaches in and pulls out one ball. if
A gas company that refills tanks took a random sample of customers on a recent Saturday morning and reported the mean age of the propane tanks to be 3.45 years.
Are there any countries that do not seem to fit the overall pattern?- Find the correlation, and interpret the value of R2.- Find the equation of the regression line.
the main advantage of experiments over observational studies is thata well-designed experiment can give good evidence
Calculate and give an interpretation of the coefficients based on a one-unit change in each xi.
Construct ogive cure and numerical measures for the discrete data.
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