The factored form of a quadratic function is
Answer the following question:
If
- write the factored form of the quadratic function f(x)
- write the standard form for the quadratic function f(x)
Consider the following polynomial function. — - . -
The average value of a normal distribution is 32, and the standard deviation is 4. Determine the likelihood that a randomly chosen xx-value from the distribution is no greater than 35. Four decimal places should be used.
The following data on = soil depth (in centimeters) and y = percentage of montmorillonite in the soil were taken from a scatterplot in the paper "Ancient Maya Drained Field Agriculture: Its Possible Application Today in the New River Floodplain, Belize, C.A." (Agricultural Ecosystems and Environment [1984]: 67-84):
a. Draw a scatterplot of y versus x.
b. The equation of the least-squares line is 0.45x. Draw this line on your scatterplot. Do there appear to be any large residuals?
c. Compute the residuals, and construct a residual plot. Are there any unusual features in the plot?