A department of education reported that in 2007, 68% of students enrolled in col

Question

A department of education reported that in 2007, 68% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 320 individuals who graduated from high school 12 months prior was selected. From this sample, 236 students were found to be enrolled in college or a trade school. Complete parts a through c below a. Construct a 90% confidence interval to estimate the actual proportion of students enrolled in college or a trade school within 12 months of graduating from high school in 2013. A 90% confidence interval to estimate the actual proportion has a lower limit of (Round to three decimal places as needed.) to and an upper

Explanation / Answer

The statistical software output for this problem is:

One sample proportion summary confidence interval:
p : Proportion of successes
Method: Standard-Wald

90% confidence interval results:

Hence,

Lower limit = 0.697

Upper limit = 0.778

Proportion Count Total Sample Prop. Std. Err. L. Limit U. Limit p 236 320 0.7375 0.024596351 0.6970426 0.7779574

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