The Tread Life of a Particular Brand of Tire Is

question 27

Multiple Choice

The tread life of a particular brand of tire is a random variable best described by a normal distribution with amean of 60,000 miles and a standard deviation of 2900 miles. What is the probability a certain tire of this brandwill last between 53,910 miles and 54,780 miles?

• A) 0.0180
• B) 0.9813
• C) 0.4920
• D) 0.4649

---

Definitions:

Purchases Discount

A deduction from the stated purchase price, often granted to encourage early payment or bulk buying.

Periodic Inventory System

A method that relies on occasional physical counts of inventory to determine the ending inventory balance and the cost of goods sold.

Purchase Return

Occurs when a buyer returns merchandise to the seller for a refund or credit due to various reasons such as defects or dissatisfaction.