Q9) A) It is found that the mean annual earnings for an English major has a 95% confidence interval of ($35,000, $65,0

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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.