The Local Oil Changing Business Is Very Busy on Saturday

question 121

Multiple Choice

The local oil changing business is very busy on Saturday mornings and is considering expanding.A national study of similar businesses reported the mean number of customers waiting to have their oil changed on Saturday morning is 3.6.Suppose the local oil changing business owner, wants to perform a hypothesis test.The null hypothesis is the population mean is 3.6 and the alternative hypothesis is the population mean is not equal to 3.6.The owner takes a random sample of 16 Saturday mornings during the past year and determines the sample mean is 4.2 and the sample standard deviation is 1.4.It can be assumed that the population is normally distributed.The level of significance is 0.05.The decision rule for this problem is to reject the null hypothesis if the observed "t" value is _______.

• A)less than -2.131 or greater than 2.131
• B)less than -1.761 or greater than 1.761
• C)less than -1.753 or greater than 1.753
• D)less than -2.120 or greater than 2.120
• E)less than -3.120 or greater than 3.120

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Definitions:

Structuralism

A theory in psychology and sociology focusing on the components of mental processes, societies, and other phenomena.

Psychiatry

A branch of medicine dealing with psychological disorders; practiced by physicians who sometimes provide medical (for example, drug) treatments as well as psychological therapy.

Cognitive Neuroscience

The study of the neural mechanisms underlying cognition, focusing on the neural connections involved in mental processes.

Introspection

The examination and analysis of one's own thoughts, feelings, and sensations; a method used in psychology and philosophy.