Answer:
There are more than 4000 such cities in the world. To be exact: 4037
Explanation:
Answer:
b. Carryover effects
Explanation:
THESE ARE THE OPTIONS FOR THE QUESTION BELOW
a. Sampling effects
b. Carryover effects
c. Participant attrition
d. Participant fatigue
From the question, we are informed about a researcher who uses a within-subjects design in which one group completes a difficult puzzle and the second group completes an easy puzzle. He finds that participants who completed the difficult puzzle first were able to learn about the puzzle and completed the easy puzzle quicker, compared to participants who did the easy puzzle first. In this case, the type of threat to internal validity was described in this example was Carryover effects. A carryover effect can be regarded as an effect which is been carried over from one experimental condition up to another experimental condition. It is any lingering effects resulting from a previous experimental condition which has any on current experimental condition.Common type of carryover effect is known as practice effect , in this effect participants perform a task better when performing in later conditions since there was a chance to practice it in time past.
Answer:
C - the survey respondens tended to be from a homogeneous social background and therefore not representative of the nation as a whole.
Explanation:
If C were true, it would invalidate both the survey and and the conclusion as if the group were homeogenous and only represented one social group (background), the options would not be varied and only indicitive of that group.
<span> It has been in operation for only 18 months between April 1860 and October 1861, the Pony Express nevertheless has become synonymous with the Old West. Hope this helps
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