A random sample of 300 United States cell phone users were asked their age and the question “Do you regularly use your cell phone to text while eating dinner?” The number responding yes was tabulated separately for young adults (aged 18–29), older adults (aged 30–64), and elderly adults (aged 65 or older). The results are summarized in the following table. Uses Cell Phone to Text while Eating Dinner Yes No Total Young adults 127 3 130 Age Group Older adults 113 29 142 Elderly adults 15 13 28 Total 255 45 300 Which of the following would be the appropriate hypotheses to investigate whether the survey provides convincing statistical evidence that there is an association between a person’s age-group and regular use of a cell phone to text while eating dinner? H0 :H0 : Among adults in the United States population, there is no difference between age-groups in the proportion of individuals who use their cell phone to text while eating dinner. Ha :Ha : Among adults in the United States population, there is a difference between age-groups in the proportion of individuals who use their cell phone to text while eating dinner. A H0 :H0 : Among adults in the United States population, there is no association between age-group and cell phone usage to text while eating dinner. Ha:Ha: Among adults in the United States population, there is an association between age-group and cell phone usage to text while eating dinner. B H0 :H0 : For this sample of United States adult cell phone users, there is no association between age-group and cell phone usage to text while eating dinner. Ha :Ha : For this sample of United States adult cell phone users, there is an association between age-group and cell phone usage to text while eating dinner. C H0 :H0 : The sample proportion of adult cell phone users who used their cell phone for texting while eating dinner is the same in each age-group. Ha :Ha : The sample proportion of adult cell phone users who used their cell phone for texting while eating dinner differs between at least two age-groups. D H0 :H0 : Among adults in the United States population, there is an association between age-group and cell phone usage to text while eating dinner. Ha :Ha : Among adults in the United States population, there is no association between age-group and cell phone usage to text while eating dinner. E
A random sample of 300 United States cell phone users were asked their age and the question “Do you regularly use your cell phone to text while eating dinner?” The number responding yes was tabulated separately for young adults (aged 18–29), older adults (aged 30–64), and elderly adults (aged 65 or older). The results are summarized in the following table.
| Uses Cell Phone to Text while Eating Dinner | ||||
|---|---|---|---|---|
| Yes | No | Total | ||
| Young adults | 127 | 3 | 130 | |
| Age Group | Older adults | 113 | 29 | 142 |
| Elderly adults | 15 | 13 | 28 | |
| Total | 255 | 45 | 300 |
Which of the following would be the appropriate hypotheses to investigate whether the survey provides convincing statistical evidence that there is an association between a person’s age-group and regular use of a cell phone to text while eating dinner?
-
H0 :H0 : Among adults in the United States population, there is no difference between age-groups in the proportion of individuals who use their cell phone to text while eating dinner.
Ha :Ha : Among adults in the United States population, there is a difference between age-groups in the proportion of individuals who use their cell phone to text while eating dinner.
A -
H0 :H0 : Among adults in the United States population, there is no association between age-group and cell phone usage to text while eating dinner.
Ha:Ha: Among adults in the United States population, there is an association between age-group and cell phone usage to text while eating dinner.
B -
H0 :H0 : For this sample of United States adult cell phone users, there is no association between age-group and cell phone usage to text while eating dinner.
Ha :Ha : For this sample of United States adult cell phone users, there is an association between age-group and cell phone usage to text while eating dinner.
C -
H0 :H0 : The sample proportion of adult cell phone users who used their cell phone for texting while eating dinner is the same in each age-group.
Ha :Ha : The sample proportion of adult cell phone users who used their cell phone for texting while eating dinner differs between at least two age-groups.
D -
H0 :H0 : Among adults in the United States population, there is an association between age-group and cell phone usage to text while eating dinner.
Ha :Ha : Among adults in the United States population, there is no association between age-group and cell phone usage to text while eating dinner.
E
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