On the basis of her newly developed technique, a student believes she can reduce the amount of time patients diagnosed with schizophrenia spend in an institution. As director of training at a nearby institution, you agree to let her try her method on 20 patient diagnosed with schizophrenia, randomly sampled from your institution. The mean duration that patients diagnosed with schizophrenia stay at your institution is 85 weeks, with a standard deviation of 15 weeks. The scores are normally distributed. The results of the experiment show that the patients treated by the student stay a mean duration of 78 weeks. 1. What is the alternative hypothesis (H11)? In this case, assume a nondirectional hypothesis is appropriate because there are insufficient theoretical and empirical bases to warrant a directional hypothesis. 2. What is the null hypothesis (H?o)? 3. Use an α = 0.052????2tail What do you conclude about the student’s technique (do you accept or reject the H?o?
On the basis of her newly developed technique, a student believes she can reduce the amount of time patients diagnosed with schizophrenia spend in an institution. As director of training at a nearby institution, you agree to let her try her method on 20 patient diagnosed with schizophrenia, randomly sampled from your institution. The
1. What is the alternative hypothesis (H11)? In this case, assume a nondirectional hypothesis is appropriate because there are insufficient theoretical and empirical bases to warrant a directional hypothesis.
2. What is the null hypothesis (H?o)?
3. Use an α = 0.052????2tail What do you conclude about the student’s technique (do you accept or reject the H?o?
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