If X Is a Normal Random Variable with Mean of 1228

question 4

Multiple Choice

If x is a normal random variable with mean of 1228 and a standard deviation of 120, the number of standard deviations from 1228 to 1380 is:

• A) 10.233
• B) 3.1989
• C) 11.50
• D) 1.267
• E) 2.435

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Definitions:

Quintic Polynomial

A polynomial of degree five, represented as \(ax^5 + bx^4 + cx^3 + dx^2 + ex + f\) where \(a\), \(b\), \(c\), \(d\), \(e\), and \(f\) are constants and \(a \neq 0\).

Scientific Notation

A way of expressing numbers that are too big or too small to be conveniently written in decimal form, using powers of 10.

Position Function

A mathematical function that describes the position of an object as a function of time, often used in physics to study motion.

Initial Velocity

The speed of an object at the moment it begins its motion.