Please check my answers! An educational researcher is interested in high school
ID: 3178113 • Letter: P
Question
Please check my answers!
An educational researcher is interested in high school dropouts' intention to return to school. Results from a sample of 400 high school dropouts reflect that 13% of the dropouts plan to return to school next year. Answer the following questions (a) (d) based on this information. (a) Calculate the proportion of dropouts who are NOT planning to return to school next year. 0.8700 (b) Calculate the estimated SE for the proportion of dropouts who are NOT planning to return to school next year. (c) The lower limit of the 90% Cl for the proportion of dropouts who are NOT planning to return to school next year is_____ (d) The upper limit of the 90% Cl for the proportion of dropouts who are NOT planning to return to school next year is_____Explanation / Answer
a) p=1-0.13=0.87
b) std error =(p(1-p)/n)1/2 =0.0168
c)for 90% CI, z=1.64485
hence lower limit =0.87-z*std error =0.8423
d) upper limit =0.87+z*std error=0.8977