In: Statistics and Probability
The National Student Loan Survey asked the student loan borrowers in their sample about attitudes toward debt. Below are some of the questions they asked, with the percent who responded in a particular way. Assume that the sample size is 1253 for all these questions. Compute a 95% confidence interval for each of the questions, and write a short report about what student loan borrowers think about their debt. (Round your answers to three decimal places.)
(a) "To what extent do you feel burdened by your student loan payments?" 55.9% said they felt burdened.
_______, _______ |
(b) "If you could begin again, taking into account your current
experience, what would you borrow?" 54.7% said they would borrow
less.
_______, _______ |
(c) "Since leaving school, my education loans have not caused me
more financial hardship than I had anticipated at the time I took
out the loans." 33.2% disagreed.
_______, _______ |
(d) "Making loan payments is unpleasant but I know that the
benefits of education loans are worth it." 59.9% agreed.
_______, _______ |
(e) "I am satisfied that the education I invested in with my
student loan(s) was worth the investment for career opportunities."
58.2% agreed.
_______, _______ |
(f) "I am satisfied that the education I invested in with my
student loan(s) was worth the investment for personal growth."
71.3% agreed.
_______, _______ |
Conclusion
While many feel that loans are a burden and wish they had borrowed less, a majority are satisfied with their education.
While a minority feel that loans are a burden and wish they had borrowed more, a minority are satisfied with their education.
While many feel that loans are a burden and wish they had borrowed less, a minority are satisfied with their education.
While a minority feel that loans are a burden and wish they had borrowed more, a majority are satisfied with their education.
a)
zα/2 = 1.9599639861
Lower Bound = p̂ - zα/2•√p̂(1 - p̂)/n = 0.559 -
(1.9599639861)(0.014026511211266204) = 0.5315085432
Upper Bound = p̂ + zα/2•√p̂(1 - p̂)/n = 0.559 +
(1.9599639861)(0.014026511211266204) = 0.5864914568
Confidence Interval = (0.532, 0.586)
b)
zα/2 = 1.9599639861
Lower Bound = p̂ - zα/2•√p̂(1 - p̂)/n = 0.547 -
(1.9599639861)(0.014062651967787543) = 0.5194377086
Upper Bound = p̂ + zα/2•√p̂(1 - p̂)/n = 0.547 +
(1.9599639861)(0.014062651967787543) = 0.5745622914
Confidence Interval = (0.519, 0.575)
c)
zα/2 = 1.9599639861
Lower Bound = p̂ - zα/2•√p̂(1 - p̂)/n = 0.332 -
(1.9599639861)(0.013303984725525476) = 0.3059246691
Upper Bound = p̂ + zα/2•√p̂(1 - p̂)/n = 0.332 +
(1.9599639861)(0.013303984725525476) = 0.3580753309
Confidence Interval = (0.306, 0.358)
d)
zα/2 = 1.9599639861
Lower Bound = p̂ - zα/2•√p̂(1 - p̂)/n = 0.599 -
(1.9599639861)(0.013845545208006196) = 0.57186323
Upper Bound = p̂ + zα/2•√p̂(1 - p̂)/n = 0.599 +
(1.9599639861)(0.013845545208006196) = 0.62613677
Confidence Interval = (0.572, 0.626)
e)
zα/2 = 1.9599639861
Lower Bound = p̂ - zα/2•√p̂(1 - p̂)/n = 0.582 -
(1.9599639861)(0.013933945184756961) = 0.5546899693
Upper Bound = p̂ + zα/2•√p̂(1 - p̂)/n = 0.582 +
(1.9599639861)(0.013933945184756961) = 0.6093100307
Confidence Interval = (0.555, 0.609)
f)
zα/2 = 1.9599639861
Lower Bound = p̂ - zα/2•√p̂(1 - p̂)/n = 0.713 -
(1.9599639861)(0.012779391580275298) = 0.6879528527
Upper Bound = p̂ + zα/2•√p̂(1 - p̂)/n = 0.713 +
(1.9599639861)(0.012779391580275298) = 0.7380471473
Confidence Interval = (0.688, 0.738)
g)
While many feel that loans are a burden and wish they had borrowed less, a majority are satisfied with their education.