Question

Jenae changed the original coffee labels with plain white ones that had the flavor printed in bold black letters, and she placed them on the coffee pots for the week-long experiment.

Jenae used an aspect of experimental design known as ________ when she created the labels to have the same appearance.

• randomization

• a control

• replication

• a treatment

Answer 1

here Janae used randomization tool,hence

Jenae used an aspect of experimental design known as ___randomization_____ when she created the labels to have the same appearance.

In detail concept

Randomization is the cornerstone underlying the use of statistical methods in experimental designs. Randomization is the random process of assigning treatments to the experimental units. The random process implies thatv every possible allotment of treatments has the same probability. For example, if number of treatment = 3 (say, A, B, and C) and replication = r = 4, then the number of elements = t * r = 3 * 4 = 12 = n. Replication means that each treatment will appear 4 times as r = 4. Let the design is

A	C	B	C
C	B	A	B
A	C	B	A

Note from the design elements 1, 7, 9, 12 are reserved for treatment A, element 3, 6, 8 and 11 are reserved for Treatment B and elements 2, 4, 5 and 10 are reserved for Treatment C. P(A)= 4/12, P(B)= 4/12, and P(C)=4/12, meaning that Treatment A, B, and C have equal chances of its selection.

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