a farmer has cows and chickens. he has a total of 20 heads and 64 legs. How much of each animal does he have?
800 hundred chances are sold at $2 apiece for a raffle. There is a grand prize of $650 dollars, two second prizes of $250, and five third prizes of $50. First calculate the expected value of the lottery. Determine if the lottery is a fair game. If the game is not fair, determi...
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a ball is thrown upward at 64 feet per second from the top of an 80 feet high building. The height of the ball can be modeled by S(t) = -16t^2 + 64t + 80(feet), where t is the number of seconds after the ball is thrown. describe the graph model
What is the probability that we would obtain two sample means that differ by 1.875, when the SD of the sampling distribution is estimated at .125 when our sample has 8 subjects?
How is the standard error of the mean influenced by sample size and standard deviation?
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