eBook EL Help ? IMATH Hosted by ALEKS Corp. Homework #5 1 3 7 9 10 11 12 13 14 15 16 17 18 19 20 Question 8 of 20 (1 point) Attempt 1 of Unlimited View question in a popup 10 2 Section Exercise 20 A...

Extracted text: eBook EL Help ? IMATH Hosted by ALEKS Corp. Homework #5 1 3 7 9 10 11 12 13 14 15 16 17 18 19 20 Question 8 of 20 (1 point) Attempt 1 of Unlimited View question in a popup 10 2 Section Exercise 20 A study found that of 4800 cell phone owners in 2011,575 owned a smartphone. The study was repeated in 2013, and 950 out of 4800 cell phone owners owned smartphones. Part: 0 / 2 இ Part 1 of 2 (a) Construct a 95% confidence interval for the increase in the proportion of cell phone owners with smartphones between 2011 and 2013. Use tables to find the critical value and round the answer to at least three decimal places. dlo A 95% confidence interval for the increase in the proportion of cell phone owners with smartphones between 2011 and 2013 is