In a famous research study conducted in the years 1927-1932 at an electrical equipment manufacturing plant, experimenters measured the influence of a number of variables (brightness of lights, temperature, group pressure, working hours, and managerial leadership) on the productivity of the employees.

the major finding of the study was that no matter what experimental treatment was employed, the production of the workers seemed to improve. it seemed as though just knowing that they were being studied had a strong positive influence on the workers.

an important statistical effect was named for this manufacturing plant. what is it?

a. the hawthorne effect
b. the edison effect
c. the delco effect
d. the united electric effect
e. the general electric effect

option: A ( Hawthorne effect)

Step-by-step explanation:

Hawthorne effect:

" The Hawthorne Effect is the inclination of people who are the subjects of an experimental study to change or improve the behavior being evaluated only because it is being studied, and not because of changes in the experiment parameters or stimulus " .

Hence, option A is correct.

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.