Shipments of Coffee Beans Are Checked for Moisture Content $\mu$ Represent the Mean Water Content (In Percent by Weight) in High

question 91

Multiple Choice

Shipments of coffee beans are checked for moisture content. A high moisture content indicates water contamination and will result in the shipment being rejected. Let $\mu$ represent the mean water content (in percent by weight) in a shipment. Sixty moisture measurements will be made on beans chosen at random from the shipment. A test of the hypotheses $H _ { 0 } : \mu = 11$ versus $H _ { 1 } : \mu > 11$ will be made at the $\alpha = 0.01$ level of significance. Assume the standard deviation of moisture content is $\sigma$ = 5.0. Find the power of the test against the alternative $\mu _ { 1 }$ =13.

• A) 0.7794
• B) 0.2206
• C) 0.8828
• D) -0.7724

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Vibrating Devices

Tools or equipment that produce vibrations, used for a variety of purposes, including massage and alerts.

Habituation

A decrease in response to a stimulus after repeated exposure, indicating a basic form of learning or adaptation.

Repeated Stimulation

The process of continuously or frequently exposing someone or something to a particular stimulus to induce a reaction or to study changes over time.

Reflex

An automatic and involuntary response to a specific stimulus without conscious thought.