Examlex
Improving productivity A packing company considers hiring a national training
consultant in hopes of improving productivity on the packing line. The national consultant
agrees to work with 18 employees for one week as part of a trial before the packing
company makes a decision about the training program. The training program will be
implemented if the average product packed increases by more than 10 cases per day per
employee. The packing company manager will test a hypothesis using α = 0.05.
a. Write appropriate hypotheses (in words and in symbols).
b. In this context, which do you consider to be more serious - a Type I or a Type II error?
Explain briefly.
c. After this trial produced inconclusive results the manager decided to test the training
program again with another group of employees. Describe two changes he could make in
the trial to increase the power of the test, and explain the disadvantages of each.
Nonretentive Outputs
Output signals or data in a control system that do not maintain their state after a power cycle or reset.
Latch Instruction
One-half of an instruction pair (the second instruction of the pair being the unlatch instruction) that emulates the latching action of a latching relay. The latch instruction for a programmable logic controller energizes a specified output point or internal coil until it is de-energized by a corresponding unlatch instruction.
MCR Zone
In programmable logic controllers (PLCs), a Master Control Relay zone, which refers to a section of the program controlled by a master relay for safety or operational purposes.
Q6: A scatterplot of log(Y) vs. log(X)
Q25: Many school administrators watch enrollment numbers for
Q36: Dice rolls Two players compete against each
Q49: Graduation tests Many states mandate tests that
Q69: The distances (in miles) driven in
Q71: State your conclusion.
Q73: A professor runs a regression to see
Q75: Was your test one-tail upper tail, lower
Q79: College admissions According to information from a
Q81: Still strange dice • The six faces