Please explain how to get answer on TI-84 Plus Construct the indicated confidenc

Question

Please explain how to get answer on TI-84 Plus

Construct the indicated confidence interval for the difference between population proportions p1 - p2. Assume that the
samples are independent and that they have been randomly selected.
23) A marketing survey involves product recognition in New York and California. Of 558 New
Yorkers surveyed, 193 knew the product while 196 out of 614 Californians knew the
product. Construct a 99% confidence interval for the difference between the two
population proportions.

ANSWER:

-0.0443 < p1 - p2 < 0.0976

Explanation / Answer

select   2-PropZInt on TI-84

type

x1 = 193 ,

n1 = 558 ,

x2 = 196 ,

n2 = 614

C-level = 99

then calculate to get the confidence interval

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