Statistical hypothesis testing

felipe

New member
Joined
May 28, 2014
Messages
1
Hey guys, I'm having a problem with this exercise. Can you help me?

Publications data shows that the proportion of children on elementary school with posture problems is 0.20. In order to reduce this proportion, a campaign of "good posture practices" was conducted in schools. To verify if the campaign was effective with students of a school, a researcher evaluated 25 students chosen randomly.

a) Formulate this problem by statistical hypothesis testing.
b) If, among the 25 students who participated in the campaign, 22 showed no postural problems, which is the p-value, and what is the decision adopting α = 10%?
 
Top