Author Question: The sign test is always a one-tailed test. Indicate whether the statement is true or ... (Read 90 times)

HudsonKB16 · **on:** Jul 24, 2018

The sign test is always a one-tailed test.
Indicate whether the statement is true or false

Question 2

The normal random variable's density function is (1) single-peaked above the variable's mean, median, and mode, all of which are equal to one another, (2) perfectly symmetric about this peaked central value and, thus, bell-shaped, and (3) characterized by tails extending indefinitely in both directions from the center, approaching (but never touching) the horizontal axis, which implies a positive probability for finding values of the random variable anywhere between minus infinity and plus infinity.
Indicate whether the statement is true or false