Question

According to a Field Poll, 400 out of 506 surveyed California adults feel that “education and our schools” is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education and the schools is one of the top issues facing California.

A point estimate for the true population proportion is: _______________

(Write as a decimal and round to 4 decimal places)

1. The margin of error for a 90% confidence level is: _________________

   (Write as a decimal round to 4 decimal places)

2. A 90% confidence interval for the population proportion is: ( , )

   (Write as a decimal round to 4 decimal places.)

Answer 1

S0/9 bin ce uhere x isthe number of adlults eel that ealucatom anol ou school6 6 Ome fthe top ues fauing Califormia Pamt es Hmate foy the rue population Poporion 7905 Уо Margin eror Ze XPC1-) 0 791-0.790) = 1-6v^x 0, y069 22 4919 o 0298 Comtidence gnteswal af the proportion Populakion To.490 0.7905 (1-0.79os) 1.6uSx S06 (6.7905 o 0298 (0760 O 8203)