In which experimental design is a single, categorical extraneous ...

[DelorasTo]

In which experimental design is a single, categorical extraneous variable that might affect test units' responses to the treatment identified and the effects isolated by being blocked out?
 a. completely randomized design
  b. factorial design
  c. randomized-block design
  d. interactive block design

Question 2

The document to the researcher that approves the project, details who has responsibility for it, an describes the resources available to support it is called the:
 a. letter of authorization
  b. letter of transmittal
  c. introductory letter
  d. formality letter

[parker125]

Answer to Question 1

C

Answer to Question 2

A

[DelorasTo]

Thank you

[parker125]

No problemo