Nancy believes that the average running time of movies is equal to 140 minutes. A sample of 4 movies was taken and the following running times were obtained. Assume the distribution of the population is normally distributed.
a.State the null and alternative hypotheses.
b.Using a critical value, test the hypothesis at the 10% level of significance.
c.Using a p-value, test the hypothesis at the 10% level of significance.
d.Using a confidence interval, test the hypothesis at the 10% level of significance.
e.Could a Type II error have been committed in this hypothesis test?
Definitions:
Secondary Prevention
Detection of psychological disorders in their earliest stages and treatment designed to reduce their development.
Tertiary Prevention
Program focusing on people who already have a disease with the aim of preventing relapse and reducing the impact of the disease on the person’s quality of life.
Sociocultural Approaches
The study of how social and cultural factors influence behavior, cognition, and emotions, focusing on the impact of society, culture, and interpersonal relationships.
Psychological Disturbance
A state of emotional, cognitive, or behavioral distress or dysfunction that interferes with daily life and wellbeing.
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