A Random Sample Of Ni 240 People Who Live In A City Were Selected And 101 Identified As A Dog Person A Random Sampl 1 (125.89 KiB) Viewed 112 times
A random sample of ni = 240 people who live in a city were selected and 101 identified as a "dog person." A random sample of n2 = 108 people who live in a rural area were selected and 65 identified as a "dog person." Find the 99% confidence interval for the difference in the proportion of people that live in a rural area who identify as a "dog person" and the proportion of people that live in a city who identify as a "dog person." Define: • 1 = city • 2 = rural Questions: 1. State the value of the sample proportion for those who live in the city. Ôi = Round to 2 decimals. 2. State the value of the sample proportion for those who live in a rural area. Ô 2 Round to 2 decimals. = 3. Is niệi > 5? (yes or no) 4. Is ni(1 – P.1) > 5? (yes or no) — 5. Is n2ê2 > 5? (yes or no) 6. Is n2(1 – Ô2) > 5? (yes or no) 7. Find the value of the standard error. SECÔ2 – Ô1) Round to 3 decimals. = 8. Find the value of z needed to create the confidence interval. Round to 2 decimals.
9. Find the confidence interval for the proportion of rural minus the proportion of city. Round your final answers to 3 decimals. In your calculations, use your values from earlier. < Select an answer v
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