Concept explainers
(a)
To give a
(a)
Answer to Problem 16E
We conclude that we are
Explanation of Solution
It is given in the question that First USA, a major credit card company is planning a new offer for their current cardholders. The offer will give double airline miles on purchase for the next six months if the cardholder goes online and registers for the offer. Thus, we have,
Let us first check the conditions for the following as:
Random condition: It is satisfied as it is assumed that the sample is randomly selected.
Normal condition: It is satisfied as,
Thus, all the conditions are met. Therefore, now, to find the confidence interval we will use the calculator
Thus, the confidence interval will be as:
Thus, we conclude that we are
(b)
To explain what would you say, given the confidence interval.
(b)
Explanation of Solution
It is given in the question that First USA, a major credit card company is planning a new offer for their current cardholders. The offer will give double airline miles on purchase for the next six months if the cardholder goes online and registers for the offer. Thus, the confidence interval will be as:
Thus, we conclude that we are
Chapter 19 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
Additional Math Textbook Solutions
Fundamentals of Statistics (5th Edition)
STATS:DATA+MODELS-W/DVD
Elementary Statistics: Picturing the World (7th Edition)
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