This isn’t helpful considering no one knows what type of news letter you want
Answer:
Visitor tracking is the correct answer.
Explanation:
The following answer is true because Visitor tracking is the technique for the audience-development that provides the information for which the Emily is seeking. That's why she told the designer or programmer to update the content of the webpages for Emily's company's website and she also told them to working for that marketing department for which she gathering the information for the product contents.
Answer:
(a)
(b)
(c) Smoking increases the time to fall asleep
Explanation:
Solving (a): The sample mean of each group
Mean is calculated as:
So, we have:
<u>Smokers</u>
and
Non Smokers
and
Solving (b): The standard deviation of each group
This is calculated as:
For smokers
So:
For non-smokers
So:
Solving (c): Impact of smoking on time to sleep
In (b), we have:
--- smokers
--- non-smokers
<em>Smokers have larger standard deviation (i.e. large variability) than non-smokers. This means that smokers require more time to fall asleep.</em>