Arandom sample of 1000 registered voters in flagstaff found 760 registered voters who support immigration reform. find a 95% confidence interval for the true percent of registered voters in flagstaff who support immigration reform.

Step-by-step explanation:

Given : A random sample of 1000 registered voters in Flagstaff found 760 registered voters who support immigration reform.

sample size : n= 1000

sample proportion:

Critical value for 95% confidence interval =

Confidence interval :

Hence, the  95% confidence interval for the true percent of registered voters in Flagstaff who support immigration reform:

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000