A Random Sample of 10 Waitresses in Darwin Revealed the Following

question 67

Short Answer

A random sample of 10 waitresses in Darwin revealed the following hourly earnings (in dollars, including tips): $\begin{array}{|l|l|l|l|l|l|l|l|l|l|}\hline19 & 18 & 15 & 16 & 18 & 17 & 16 & 18 & 20 & 14 \\\hline\end{array}$ If the hourly earnings are normally distributed with a standard deviation of $4.5, estimate with 95% confidence the mean hourly earnings for all waitresses in Darwin.

---

Definitions:

Phylogenetic Systematics

A method of classifying living organisms based on their evolutionary relationships, using traits inherited from common ancestors.

Derived

A term used to describe traits, characteristics, or features that have evolved in a particular species or lineage from an ancestral state, indicating evolutionary change.

Platypuses

Aquatic mammals native to Australia known for their unique characteristics such as laying eggs, having bill and webbed feet.

Therians

Mammals excluding the monotremes, comprising the live-bearing marsupials and placental mammals, characterized by traits such as viviparity and mammary glands.