Answered step by step
Verified Expert Solution
Question
1 Approved Answer
Eric wants to estimate the percentage of elementary school children who have a social media account. He surveys 450 elementary school children and finds 280
Eric wants to estimate the percentage of elementary school children who have a social media account. He surveys 450 elementary school children and finds 280 have a social media account. Identify the confidence interval at 99% confidence level. Find the confidence interval.
Z0.10 Z0.05 Z0.025 Z0.01 Z0.005
1.282 1.645 1.960 2.326 2.576
Use the table of common z-scores above.
Round 3 decimal places
p'=
std div p'=
za/2=
( , )
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started