Question 11 (6 points) The director of admissions at the University of Maryland,
ID: 3176312 • Letter: Q
Question
Question 11 (6 points)
The director of admissions at the University of Maryland, University College is concerned about the high cost of textbooks for the students each semester. A sample of 25 students enrolled in the university indicates that x(bar) = $315.40 and s = $43.20.
Using a significance level of .1, what are the boundaries of the confidence interval?
Question 11 options:
302.438 - 326.184
300.618 - 330.182
297.485 - 327.820
282.871 - 338.475
302.438 - 326.184
300.618 - 330.182
297.485 - 327.820
282.871 - 338.475
Explanation / Answer
For this problem,
The statistical software output is:
One sample T confidence interval:
: Mean of population
90% confidence interval results:
Hence,
Boundaries of the confidence interval:
300.618 - 330.182
Option B is correct.
Mean Sample Mean Std. Err. DF L. Limit U. Limit 315.4 8.64 24 300.61798 330.18202Related Questions
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