1. Which of the following is not a
characteristic of the normal probability distribution?
a.
The distribution is symmetrical
b.
The mean of the distribution can be negative, zero, or
positive
c.
The standard deviation must be 1
d.
The mean, median, and the mode are equal
2. If , n = 12, and the slope equals 0.5, then the
y-intercept of the least squares line is
b0 = 276.08.
True
False
3. The coefficient of correlation r is a...