Q9) A) It is found that the mean annual earnings for an English major has a 95% confidence interval of ($35,000, $65,0
Posted: Wed May 04, 2022 11:54 am
Q9)
A) It is found that the mean annual earnings for an
English major has a 95% confidence interval of ($35,000, $65,000)
and the mean annual earnings for a music major has a 95% confidence
interval of ($24,000, $38,000). Can you say that the mean for
an English major is greater than the mean for a music major?
Why or why not? Answer in a full sentence.
B.
What effect does increasing the level of confidence have on the
width of a confidence interval?
Group of answer choices
The interval will become wider.
The interval will become narrower.
The interval will change, but how will depend on sample
size.
No effect.
A) It is found that the mean annual earnings for an
English major has a 95% confidence interval of ($35,000, $65,000)
and the mean annual earnings for a music major has a 95% confidence
interval of ($24,000, $38,000). Can you say that the mean for
an English major is greater than the mean for a music major?
Why or why not? Answer in a full sentence.
B.
What effect does increasing the level of confidence have on the
width of a confidence interval?
Group of answer choices
The interval will become wider.
The interval will become narrower.
The interval will change, but how will depend on sample
size.
No effect.