A researcher has developed a drug to help patients whose ...

[Metfan725]

A researcher has developed a drug to help patients whose chemotherapy has made them unable to eat. She hypothesizes that the new drug will increase eating at moderate levels, but will have toxic effects that reduce anxiety at high levels. She wants to present four different levels of the drug (placebo, low dose, moderate dose, and high dose) to different groups of subjects and measure the average eating behavior of each group. She should use a _____ test to make inferences and draw conclusions from her data.
 
  a. one-way ANOVA c. t test for independent samples
  b. repeated measures ANOVA d. t test for related samples

Question 2

An experimenter suspects that the relationship between fear and activity is curvilinear, such that as fear increases, activity increases up to a point and then declines. The appropriate design for an experiment that would test this hypothesis should use _____ as the inferential test.
 
  a. t test for independent samples c. one-way ANOVA
  b. t test for related samples d. two-way ANOVA

[Melissahxx]

Answer to Question 1

A
The design that involves the use of multiple levels of a single independent variable (the different doses of the drug) requires a one-way ANOVA for an inferential test.

Answer to Question 2

C
The one-way ANOVA is appropriate for designs that require multiple levels of a single independent variable.

[Metfan725]

Wow, this really help

[yeungji]

Gracias!