The marketing director of AB Cola is worried that the product is not attracting
ID: 3292880 • Letter: T
Question
The marketing director of AB Cola is worried that the product is not attracting the young adult (18-30 years) consumer. To test his she randomly surveys 36 AB Cola consumers. The mean age of adults in the community is 32. The surveyed consumers of AB Cola have a mean age of 35 with a standard deviation of 10 years. Is their sufficient evidence to conclude that AB Cola’s customers are, on the average, older than the average adult in the community? = 0.01.
Ho:_____________
Ha:_____________
Test Statistics: _______________________
Decision Rule: _______________________
Decision: _____________________
Interpretation: ___________________
Explanation / Answer
Ho:=32
Ha: :>32
Test Statistics: t=(xbar-32)/(s/sqrt(n))
=(35-32)/(10/sqrt(36))
=1.8
Decision Rule: degree of freedom=n-1=36-1=35
Right tailed Critical t at 0.01 level is t==2.4377
We reject H0 is calculated t>2.4377 otherwise retain it
Decision: As calculated t<2.4377, we do not reject the null hypothesis
Interpretation: We conclude that AB Cola’s customers are not , on the average, older than the average adult in the community
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.