The term "accuracy" best refers to which of the following?
a. whether or not a measurement is correct
b. how "close together" a set of measurements is
c. whether or not a tool for making measurements is useful
d. how close a measurement is to an accepted value for the measurement

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?