Full Hypothesis Test Examples · Exercise 31
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 30% of the teen girls smoke to stay thin?
After conducting the test, your decision and conclusion are
(a) Reject H_0: There is sufficient evidence to conclude that more than 30% of teen girls smoke to stay thin.
(b) Do not reject H_0: There is not sufficient evidence to conclude that less than 30% of teen girls smoke to stay thin.
(c) Do not reject H_0: There is not sufficient evidence to conclude that more than 30% of teen girls smoke to stay thin.
(d) Reject H_0: There is sufficient evidence to conclude that less than 30% of teen girls smoke to stay thin.
OpenStax, Introductory Business Statistics 2e · §9.4 Full Hypothesis Test Examples · Exercise 31
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