Jim is weighing an egg on an old triple beam balance, and he cannot adjust the rusted weights appropriately to balance the scale. he makes his best guess at the correct measurement and records it. what type of error has been introduced into jim’s experiment?

a.
random error
c.
systematic error
b.
constant error
d.
unfixable error

Plastic and steel are substitutes in the production of body panels for certain automobiles. if the price of plastic increases, with other things remaining the same, we would expect: a) the demand curve for plastic to shift to the left. b) the price of steel to fall. c) the demand curve for steel to shift to the left d) nothing to happen to steel because it is only a substitute for plastic. e) the demand curve for steel to shift to the right