Suppose a Department Store Wants to Estimate the Mean Age

question 76

Short Answer

Suppose a department store wants to estimate the mean age of the customers of its contemporary apparel department,correct to within 2 years,with level of confidence equal to 95%.Management believes that the standard deviation is 8 years.The sample size they should take is .

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Definitions:

Kyphosis

A condition characterized by an excessive outward curvature of the spine, causing hunching of the back.

Lumbar

Relating to the lower region of the back between the ribs and the pelvis.

-Malacia

A suffix denoting a pathological softening of tissues, commonly used in medical terms.

-Penia

A suffix meaning deficiency or lack of something, commonly used in medical terminology, such as leukopenia (deficiency of white cells in the blood).