Null and Alternative Hyphothesis

Oct 2019
33
1
united states
Over the past few decades, public health officials have examined the link between weight concerns and teen girls' smoking. Researchers surveyed a group of 273 randomly selected teen girls living in Massachusetts (between 12 and 15 years old). After four years the girls were surveyed again. Sixty-three said they smoked to stay thin. Is there good evidence that more than thirty percent of the teen girls smoke to stay thin?

After conducting the test, what are your decision and conclusion?


Reject H0: There is sufficient evidence to conclude that more than 30% of teen girls smoke to stay thin.

Do not reject H0: There is sufficient evidence to conclude that more than 30% of teen girls smoke to stay thin.

Reject H0: There is sufficient evidence to conclude that less than 30% of teen girls smoke to stay thin.

Reject H0: There is not sufficient evidence to conclude that more than 30% of teen girls smoke to stay thin.

Do not reject H0: There is not sufficient evidence to conclude that less than 30% of teen girls smoke to stay thin.

Do not reject H0: There is not sufficient evidence to conclude that more than 30% of teen girls smoke to stay thin.

I dont know wich one is correct. Could someone explain it for me?