Question

Written Assignment H (Sections 6.1-C1, 6.1-HT, 6.2-CI, 6.2-HT) STA 270: Applied Statistics 1. In a random sample of 1500 U.S. adults, 780 of them are "Thriving" which is defined as rating their current life as 7 or higher on a 10 point scale and rating their future life as 8 or higher on a 10 point scale. Using the methods of Section 6.1-CI (statistic + 2*(SE)), find and interpret a 99% confidence interval for the proportion of all U.S. adults who are thriving (based on this definition). Show all calculations.

Answer 1

Giren Total = 1500an, 2=991. 180 of them gave rating Corresponding 12=2.376 Þ= 780 = 0.52 I SVO PL- 8 +21 PRE Confidence Interval n 0.52 + 20576 (0.5) (6:052) 15ão = 0.52 + 0-0 33 Confidence Interras = (6.4867, 0.55322