Dullco Manufacturing Claims That Its Alkaline Batteries Last at Least

question 56

Multiple Choice

Dullco Manufacturing claims that its alkaline batteries last at least 40 hours on average in a certain type of portable CD player. But tests on a random sample of 18 batteries from a day's large production run showed a mean battery life of 37.8 hours with a standard deviation of 5.4 hours. To test DullCo's hypothesis, the p-value is:

• A)slightly less than .05.
• B)exactly equal to .05.
• C)slightly greater than .05.
• D)uncertain without knowing α.

---

Definitions:

Recall

The mental process of retrieving information from past experience or learning that is currently not in conscious awareness.

Attending Church

The act of participating in religious services, particularly in a Christian context.

Implicit

Referring to knowledge, attitudes, or feelings that influence an individual's behavior unconsciously, without their aware acknowledgment.

Moderately Positive

Refers to a relationship or correlation that is positive but not strongly so.