1. Why is it possible for condition means to differ at the end of an experiment

Question

1. Why is it possible for condition means to differ at the end of an experiment even if the independent variable had no effect?   

a. a Type II error has occurred

b. error variance

c. randomization  

d. a null finding has been obtained

2. Inferential statistics such as t-tests are used to test   

a. the likelihood of a Type II error  

b. pretests

c. directional, but not non-directional hypotheses

d. differences between condition means   

3. A researcher hypothesizes that babies will fall to sleep more quickly if they can hear the sound of a recorded heartbeat. The null hypothesis for this study is that   

a. babies who hear a heartbeat will fall asleep more quickly than those who don’t hear a heartbeat  

b. babies who hear a heartbeat will fall asleep more slowly than those who don’t hear a heartbeat

c. babies who hear a heartbeat will fall asleep just as quickly as those who don’t hear a heartbeat   

d. babies who hear a heartbeat will not fall asleep  

Explanation / Answer

Answer:-

1) option b) error variance.

2) option d)difference between condition means

3) option c)Babies who hear a heartbeat will fall asleep just as quickly as those who don't hear a heartbeat

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