The Mean Weight of Loads of Rock Is 46

question 69

Multiple Choice

The mean weight of loads of rock is 46.0 tons with a standard deviation of 10.0 tons. If 9 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is less than 42.00
Tons. Assume that the variable is normally distributed.

• A) 0.1151
• B) 0.3151
• C) 0.1551
• D) 0.4008

---

Definitions:

Equilibrium

A state in which market supply and demand balance each other, and as a result, prices become stable.

Hawk-Dove Game

A model in game theory illustrating the conflict between aggressive (hawk) and peaceful (dove) strategies.

Payoff

A payoff refers to the return or the outcome received from a particular investment or decision, often evaluated in terms of profit or loss.

Proportion

A mathematical relation between parts, quantities, or amounts that expresses how much one is relative to the other.