Explanation:
This may be the answer of your question
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
I believe the answer is: <span>who were considered to be extroverts.
Extroverts tend to become more energetic when they're surrounded by many people or become the center of attention.
From the outside, extroverts tend to be perceived as 'cheerful' or 'friendly' people that spread positive feeling to everyone near them.</span>