Reference no: EM132852939
1.a. A researcher at a counseling clinic wants to evaluate whether the clients at her office need a different number of counseling sessions than clients at other counseling clinics. To do so she compares the number of visits of a sample of clients (listed below) to the national average of the number of visits to counseling clinics which is 11.
10 10 11 12 8 8 9 11 10 6 9 10
10 10 9 8 12 12 11 9 10 14 11 10
Is this a one-tailed or a two-tailed test?
What is the alternative hypothesis?
What is the null hypothesis?
With α=.05, what is the tcrit?
What is the t value (tobt)?
Is there a relationship between the researcher's counseling clinic and number of counseling sessions? If so, describe the relationship.
What is the 95% confidence interval?
b. A scientist has decided to conduct a one-sample experiment. What are the two parametric procedures available to her? What is the deciding factor for selecting between them?
2. What is the critical t value for a one-tailed test hypothesizing a decrease when 30 participants are tested with α=.05?
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Relationship between the researcher counseling clinic
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