Question posted by StatisticsSolver

StatisticsSolver from Your 24/7 Statistics Tutoring Forum

StatisticsSolver
StatisticsSolver
Rating (1008):A+
Questions Asked: 7
Tutorials Posted: 0,
Blog Posts: 1
 

Questions Posted by StatisticsSolver

1 - 7 of 7
Bounty Status Category Sub-Category Question Due
$0.25 Closed, 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 Closed, 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 Closed, 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 Closed, 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 Closed, 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 Closed, 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 Closed, 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