Question

Researchers investigated the extent to which Narcotics Anonymous (NA) played a role in the continued sobriety of individuals in recovery from opioid addiction. The researchers were interested in assessing whether recovering individuals attended NA meetings at a rate of at least once every other week (i.e., 27 weeks per year). They randomly sampled 15 individuals from a pool of volunteers recruited from a therapist office and found that on average, these individuals attended 33.07 meetings per year with a standard deviation of 17.13. (1 pt.)

State the null and alternative hypotheses.

Conduct the appropriate test to evaluate the registrar’s claim. Let α=.05. Please show your work and be sure to provide the test statistic and critical value. (2 pts.) What decision do you make about the null hypothesis? How do you know? Then, write a statement to interpret the results

Answer 1