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Bounty	Status	Category	Sub-Category	Question	Due
Questions Posted by StatisticsSolver 1-8 of 8
$1.50	Answered, closed	Mathematics	Probability	probability A municipal bon service has three rating categories (A,B, and C). Suppose that in the past year, of the municipal bonds issued throughout the United States, 70% were rated A, 20% were raterd B and...	Feb. 16, 2009
$0.25	Answered, closed	Mathematics	Statistics	Stats Need one or two steps pls The manager of a company believed that her company's profits were following an exponential trend. She used Microsoft Excel to obtain a prediction equation for the logarithm (base 10) of profits:...	Feb. 03, 2009
$0.25	Answered, closed	Mathematics	Statistics	statistics An econometrician is interested in evaluating the relation of demand for building materials to mortgage rates in Los Angeles and San Francisco. He believes that the appropriate model is: Y = 10 + 5X1+...	Feb. 03, 2009
$1.00	Answered, closed	Mathematics	Probability	probability!!!very urgent ASAP pls 46. Thirty percent of the population in a southwestern community are Spanish-speaking Americans. A Spanish-speaking person is accused of killing a non-Spanish-speaking American. Of the first 12...	Feb. 01, 2009
$1.00	Answered, closed	Mathematics	Probability	dice problem Two fair dice are rolled. Let X equal the product of the 2 dice. Compute P(X = i) for i = 1; 2,,,.	Jan. 27, 2009
$0.25	Unanswered, closed	Mathematics	Statistics	Interpret the meaning of a .90 power value. How many total subjects (N) would be needed to obtain a power of .90? Would you have expected a required N of this size? Why or why not? Interpret the meaning of a .90 power value. N value which i...	Jan. 23, 2009
$1.00	Answered, closed	Mathematics	Statistics	Effect size Would you expect a large, medium, or small effect when examining the differences between gender on marks ? Why? Mean difference = 3.0909 Std dev = 12 i need brief explanation for the reason.. why????	Jan. 23, 2009
$10.00	Unanswered, closed	Mathematics	Statistics	special correlations Question # 3: For the items represented below, give the difficulty value z for the corrected and uncorrected proportions, taking into account the number of alternative responses in each case. ...	Jan. 14, 2009