Answer: Secondary data
Explanation: In simple words, the data that is collected by someone and is used by someone else is called secondary data. Government reports and surveys by other such organisation are two of the many examples of secondary data.
In the given case, Sandra collected information for her future business from the published research reports. She did not collected data from a census conducted by herself.
Hence, from the above we can conclude that the correct option is B.
Answer
The answer and procedures of the exercise are attached in the following archives.
Step-by-step explanation:
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.
Answer:
Part A: Null hypothesis. H₀: M₁ = M₂
Alternative hypothesis, H₁ : M₁ > M₂
Part B: x1-x2 = 6459-5735 = 724
Part C: p-value = 0.000
Part D: No, the difference in brain size is not due to random chance
Explanation:
See attached image