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For a biology project, you measure the weight in grams and the tail length in millimeters (mm) of a group of mice. The equation of the least-squares line for predicting tail length l from weight w is
l = 21 + 8 w
Now, if you measured the tail length in centimeters instead of millimeters, what would be the slope of the regression line? (There are 10 millimeters in a centimeter.)
Find the indicated area under the standard normal curve.
Use the equations from Parts a. and b. of this exercise as a system of equations. Use substitution to determine how many of each type of floor plan is available. Describe the steps you used to solve the problem.
A container initially contains 200 gallons of pure water. a salt solution of concentration 4 pounds per gallon enters at rate of 2 gal/min, and the well stirred mixture leaves at a rate of 3 gal/min. find the number of pounds of salt in the contai..
There are two small cities, Santa Clara and Santa Rosa. Santa Clara has 20 houses and Santa Rosa has 15 houses. An inspector must randomly choose 5 houses in Santa Clara and 7 houses in Santa Rosa to inspect.
A 23-ft ladder is leaning against a building. If the base of the ladder is 6 ft from the base of the building, what is the angle of elevation of the ladder? How high does the ladder reach on the building?
find an equation of the line passing throughout (-3,4) and parallel to the x-axis.
A city lot has the shape of a right triangle whose hypotenuse is 4 ft longer than one of the other sides. The perimeter of the lot is 360 ft. How long is each side of the lot?
Also Estimate the relative error in the calculated surface area.
Determine value of money after time 't' by compound interest method - How much money will be in the account in 10 years?
The length of a rectangle is 5m more than twice its width, and the area of the rectangle is 42m^2 . Find the dimensions of the rectangle.
Find the domain and range of the function: f(x)=6xsquared+4. Find the distance between the two plotted points;(-5,2) (4,-4). Using graph of f(x)=x squared as a guide, graph the function; g(x)=(x-3)squared+4
the following are the slopes of lines representing daily revenues y in term of time x in days. Use the slopes to interpret any change in daily revenues for a one-day increase in time.
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