Nancy Believes That the Average Running Time of Movies Is

question 131

Essay

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 population of the running times is normally distributed.150
150
180
170
a.Compute the sample mean and the standard deviation.
b.State the null and alternative hypotheses.
c.Using the critical value approach, test the hypotheses at the 10% level of significance.
d.Using the p-value approach, test the hypotheses at the 10% level of significance.

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Definitions:

Intrasender Role Conflict

A situation where conflicting expectations arise from the same source, leading to tension and difficulty in role fulfillment.

Interrole Conflict

A situation where an individual faces incompatible demands from different roles they are expected to fulfill.

Intersender Role Conflict

A situation in which conflicting expectations arise from two or more roles within different departments or groups.

Extrasender Role Conflict

Conflict arising when individuals receive incompatible demands from external sources outside their immediate role or job.