Exhibit 9-5 
Assume population is normally distributed.
-Refer to Exhibit 9-5. If the test is done at a 2% level of significance, the null hypothesis should
Definitions:
Edema
is the medical term for swelling caused by excess fluid trapped in the body's tissues.
Wheal
A raised, itchy area of skin that usually indicates an allergic reaction.
Edema
A medical condition characterized by an excess of watery fluid collecting in the cavities or tissues of the body.
Epidermis
The outermost layer of skin, which serves as a waterproof barrier and creates our skin tone.
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