Test Hypotheses About a Population Proportion
-A Brokerage Firm Needs $\$ 250$

question 11

Short Answer

Test Hypotheses about a Population Proportion
-A brokerage firm needs information concerning the standard deviation of the account balances of its customers. From previous information it was assumed to be $\$ 250$ . A random sample of 61 accounts was checked. The standard deviation was $\$ 286.20$ . At $\alpha = 0.01$ , test the firm's assumption. Assume that the account balances are normally distributed.

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Definitions:

Vertebral Column

The vertebral column, or spine, is a series of interconnected bones and discs that provide support for the body and protect the spinal cord.

Lordosis

Lordosis refers to the inward curvature of a part of the lumbar and cervical spine, appearing as a swayback posture.

Scoliosis

A condition characterized by an abnormal lateral curvature of the spine.

Foramen Magnum

The Foramen Magnum is a large opening in the base of the skull through which the spinal cord connects to the brain.