A Consumer Advocate Decided to Investigate the Average Wait Time

question 33

Multiple Choice

A consumer advocate decided to investigate the average wait time for a table for one at two local restaurants.Eighteen customers were sent to each restaurant at the same randomly selected times and the times they waited for a table were recorded in minutes.The following sample data was obtained. $$\begin{array} { r r | l r } &\text { Restaurant } \mathrm { A } & \text { Restaurant } \mathrm { B } \\\hline 10 & 15 & 12 & 17 \\7 & 9 & 5 & 12 \\20 & 5 & 8 & 2 \\15 & 5 & 10 & 25 \\7 & 0 & 6 & 35 \\10 & 12 & 10 & 14 \\19 & 6 & 9 & 22 \\0 & 5 & 20 & 18 \\22 & 18 & 5 & 13\end{array}$$ Find a 95% confidence interval for the difference, $\mu _ { \mathrm { A } }$ - $\mu \mathrm { B }$ ,between the mean wait time at Restaurant A and the mean wait time at Restaurant B.

• A)(-8.3,1.86)
• B)(-1.86,8.3)
• C)(-8.3,-1.86)
• D)(-13.5,-10.28)
• E)(10.28,13.5)

---

Definitions:

Trial Court

The first court where a legal case is heard, responsible for finding facts, hearing witness testimony, and making rulings based on law.

Criminal Case

A criminal case is a legal proceeding in which the state or a public prosecutor pursues charges against a person alleged to have committed a crime.

State Law

The legal rules and regulations that are created and enforced by individual states, as opposed to federal law.

State Courts

Judicial bodies in individual states that interpret and apply state laws and constitutions.