Answer: t=-5.651
Explanation:
Let
be the population mean number of hours a week answering their email.
As per given we have

Sample size : n= 783
Sample mean : 
Sample standard deviation: s=7.23
Since population standard deviation is unknown, so our test -statistic has a t-distribution.
Test statistic : 

∴ The test statistic : t=-5.651
Answer:
B. Method
Explanation:
The use of such measures is to recorded in the METHOD section of her manuscript. The psychometric properties of the measure will be recorded in method as a means of knowing what major steps she took to explore college-students' motivation at HBCUs.
Answer:
Occurs in a real-world setting.
Explanation:
When a researcher questions something that requires observation of an animal in the real world it is important that nothing happens that may change the behavior of the animal that is being observed. This affects the quality of the research as it is influenced by outside factors.
Here, Dr. Sanjay is observing how often strangers approach one another at the park on weekend afternoons. People are interacting the way they would if he was not present. This makes the observation in the real-world setting valid.