TABLE 9-3 An Appliance Manufacturer Claims to Have Developed a Compact Microwave

question 157

True/False

TABLE 9-3
An appliance manufacturer claims to have developed a compact microwave oven that consumes a mean of no more than 250 W.From previous studies,it is believed that power consumption for microwave ovens is normally distributed with a population standard deviation of 15 W.A consumer group has decided to try to discover if the claim appears true.They take a sample of 20 microwave ovens and find that they consume a mean of 257.3 W.
-True or False: Referring to Table 9-3,the null hypothesis will be rejected at 1% level of significance.

---

Definitions:

Stress

A physical or psychological response to external pressures or demands, often characterized by feelings of tension or strain.

Committing Suicide

The act of intentionally causing one's own death.

Mental Illness

A broad range of medical conditions that affect a person's thinking, feeling, mood, and behavior, which can be chronic or episodic in nature.

Headache

A pain or discomfort occurring in any area of the head, often varying in intensity, cause, and duration.