HELPPP YAL A. segments A and B
B. Segments B and D
C. Segments A, B, and C
D. Segments A, C, and E

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

In which of the following is positive work done by a person on a suitcase

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?