lake a lest - Conner Heath-G0cqle cnrome Serure https:/www.mathxl.com/Student/Pl

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lake a lest - Conner Heath-G0cqle cnrome Serure https:/www.mathxl.com/Student/Player Testaspx2testld 18001390centerwin-yes Math 1635 Summer 2018 Conner Heath & 7/8/18 6:37 PM Quiz: Quiz 3 Submit Qulz This Question: 1 pt 8 of 10 (2 complete) ? This Quiz: 10 pts possible A c mical lal tests metod des gned o ncrease he probab it the resut, dces the method appear to be effectve? of conce in a girl n th study 82 babies were born and 34 o ter were gr s Use he sa e data oco struci a 9% c encen ev es mateof he percen age gr s or i ed on (Round to three decimal places as needed.) Daes the method appear to be ettective? O No, tne proportion ot giris is not signiticantly dimterent trom D 5 O Yes, the proportion of girls is signiticantly ditferent trom 0.5 Click to select your answers). 7:36 PM O Type here to search

Explanation / Answer

The statistical software output for this problem is:

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

99% confidence interval results:

Hence,

99% confidence interval: 0.451 < p < 0.549

No, the proportion of girls is not significantly different from 0.5

Proportion Count Total Sample Prop. Std. Err. L. Limit U. Limit p 341 682 0.5 0.01914599 0.4506832 0.5493168

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