In a recent year, 72% of first-year college students responding to a national survey identified "being very well-off financially" as an important personal goal. A state university finds that 137 of an SRS of 200 of its first-year students say this goal is important. (a) Give a 80% confidence interval for the proportion of all first-year students at the university who would identify being well-off as an important personal goal. Follow the Inference Toolbox. Lower Bound:____________________ Upper Bound:____________________ (b) Is there good evidence that the proportion of all first-year students at this university who think being very well-off is important differs from the national value, 72%? (Use a=.05) z=_____________________ P-value=___________________ Conclusion: a or b? a. There is significant evidence that the proportion of all first-year students at this university who think being very well-off is important differs from the national value, 72% b.There is no significant evidence that the proportion of all first-year students at this univ who think being very well-off is important differs from the national value, 72%.
In a recent year, 72% of first-year college students responding to a national survey identified "being very well-off financially" as an important personal goal. A state university finds that 137 of an SRS of 200 of its first-year students say this goal is important.
(a) Give a 80% confidence interval for the proportion of all first-year students at the university who would identify being well-off as an important personal goal. Follow the Inference Toolbox.
Lower Bound:____________________
Upper Bound:____________________
(b) Is there good evidence that the proportion of all first-year students at this university who think being very well-off is important differs from the national value, 72%? (Use a=.05)
z=_____________________
P-value=___________________
Conclusion: a or b?
a. There is significant evidence that the proportion of all first-year students at this university who think being very well-off is important differs from the national value, 72%
b.There is no significant evidence that the proportion of all first-year students at this univ who think being very well-off is important differs from the national value, 72%.
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