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A researcher wants to predict graduate-school grade point average (GPA) from GRE verbal scores (which is what the pesky GRE is supposed to do, anyway!). She gathers data on fifty graduate students. Below are the data "high points":Independent (predictor) variable X = GRE verbal score Mean = 520 Standard Deviation = 90Dependent (criterion) variable Y = GPAMean = 3.30 Standard Deviation = 0.88 r = .50 (correlation between GRE verbal and GPA)
A. Given a score of 580 on the GRE verbal test, what GPA would you predict?B. Calculate the standard error for the predicted GPA for 1A.
A motorboat travels 448km in 7 hours going upstream. It travels 630km going downstream in the same amount of time. What is the rate of the boat in still water and what is the rate of the current?
Kelly Fisher has a total of $30,000 invested in two municipal bonds that have yields of 8% and 10% interest per year, respectively. If the interest Kelly receives from the bonds in a year is $2640, how much does she have invested in each bond?
At a restaurant the tips are split between the busboy and the waiter in the ration of 2 to 7. Find the amount each received in tips if there was a total of $162 in tips. Declare a variable for one of the peoples tips. Declare the other person's ti..
Let R be the region bounded by the graphs of: y = x - sinx, y = pi and x = 0. Use a double integral to calculate the area of the region R
teri collects loose change in 3 cans placed near cash registers at the mall. one can hold 37.18. the second one can
a sample of 100 widgets from the acme production line shows that the average lifespan of these parts is 900 hours. the
A mortgage at 9% interest compounded monthly with a monthly payment of $1125 has an unpaid balance of $10,000 after 350 months. Find the unpaid balance after 351 months.
Assuming that the total cost per day, C(x), is linearly related to the total output per day, x, write an equation for the cost function.
Suppose the radius of convergence of ∑k≥0 ckzk is R. What is the radius of convergence of each of the following? (a) ∑ k≥0 ckz2k.
Using the parametric equations x=3cost, y=3sint, 0≤t≤pi/2, find the surface area of the solid generated when y is rotated about the x axis.
question 1. oab is an isosceles triangle with oa ob and m is the mid-point of ab. let oa a and let ob b.a write the
find the x intercept of the tangent line at x=-1
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