Answer:
d. Mail surveys to 1,000 subscribers randomly selected from those who have received the magazine for 5 years or more and 1,000 subscribers randomly selected from those who have received the magazine for 1 year or less.
Step-by-step explanation:
In the case of the publishers of the magazine, in order to avoid bias, they would adopt he approach mentioned in the above statement. That is, to consider both those that have recieved the magazine for the past five years or more as well as those who have recieve the magazine for the past one year or less.
<em>This would help them to have a balanced outcome in the survey because all, would attend the the survey with a free mindset rather than baised mindset.</em>
Maximum revenue happens when 950 sandwiches are sold. When more or less sandwiches are sold revenue decreases by a constant amount.
We are told that revenue decreased by $45. We can use this information to calculate the amount of sandwiches.
number_of_sandwiches = total_revenue_change / revenue_change_per_sandwich
number_of_sandwiches = $45 / $0.10
number_of_sandwiches = 450
Number of sold sandwiches is either 450 more or 450 less than the amount of maximum revenue.
Possible numbers of sold sandwiches are:
number = 950 - 450 = 500
number = 950 + 450 = 1400
Based on the given figure above which is about the favorite communication method, we can see that the most favorite is cell phone next and followed by e-mail, then the third one is cell phone call, then instant message, and the least favorite would be landline call. So based on the results, the third most favorite communication method would be cell phone call. The answer is option B.
