Coefficient of determination
The coefficient of determination of a set of data points is 0.83 and the slope of the regression line is -1.38. Determine the linear correlation coefficient of the data.
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A poll of 69 students found that 30% were in favor of raising tution to build a new math building. The standard deviation of this poll is 6%. What would be the standard deviation if the sample size were increased from 69 to 151?
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Assume that in the year 2000, the cost of compact car averaged $ 12500 and that in 2003, the cost averaged $ 14300. Supposing that the relationship between year t and cost c is linear, develop a formula for predicting the average cost of a compact
A 1.00 x 102-g brass block at 90.0°C is placed in the plastic foam cup having 2.00 x 102 g of water at 20.0°C. No heat is lost to cup or surroundings. Determine final temperature of mixture.
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Determine speed of current (c) and every girl's rowing speed. If Emily and Ashley were rowing separately, who complete trip first and by how long?
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