Suppose the Life of a Particular Brand of Calculator Battery

question 49

Multiple Choice

Suppose the life of a particular brand of calculator battery is approximately normally distributed with a mean of 75 hours and a standard deviation of 10 hours. What is the probability that a single battery randomly selected from the population will have a life between 70 and 80 hours?

• A) 0.2412
• B) 0.3830
• C) 0.1712
• D) 0.5121

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Definitions:

Regulation A

An exemption under the Securities Act allowing smaller companies to offer and sell up to $50 million of securities in a 12-month period, subject to less stringent reporting requirements.

Resold

Refers to the action of selling something that has already been bought; involves the subsequent or secondhand sale of an item or property.

Securities Act of 1934

The Securities Act of 1934 is a U.S. federal law that primarily governs the trading of securities after the initial sale, establishing rules for transactions, the disclosure process, and the prevention of fraud.

SEC Rule 144

A regulation set by the Securities and Exchange Commission that outlines conditions under which restricted, unregistered, and control securities can be sold or offered for sale.