A Department Store Has Determined That 25% of All Their

question 103

Essay

A department store has determined that 25% of all their sales are credit sales.A random sample of 60 sales is selected.
a.What is the sampling distribution of?
b.What is the probability that the sample proportion will be greater than 0.30?
c.What is the probability that the sample proportion will be between 0.20 to 0.30?

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Definitions:

Biopsy

A medical procedure involving the extraction of sample cells or tissues for examination to determine the presence or extent of a disease.

Nevus

A medical term for a mole or birthmark, representing a localized growth of pigment-producing cells.

Psoriasis

A chronic autoimmune skin disease that speeds up the growth cycle of skin cells, causing red, scaly patches.

Macule

A flat, distinct, colored area of the skin less than 1 centimeter wide that does not involve any change in the thickness or texture of the skin.