Pop-Up Coffee Vendors Have Been Popular in the City of Adelaide

question 18

Essay

Pop-up coffee vendors have been popular in the city of Adelaide in 2013. A vendor is interested in knowing how temperature (in degrees Celsius) and number of different pastries and biscuits offered to customers impacts daily hot coffee sales revenue (in $00's).
A random sample of 6 days was taken, with the daily hot coffee sales revenue and the corresponding temperature and number of different pastries and biscuits offered on that day, noted.
Excel output for a multiple linear regression is given below: $$\begin{array} { | c | c | r | } \hline \text { Coffee sales revenue } & \text { Temperature } & \text { Pastries/biscuits } \\\hline 6.5 & 25 & 7 \\\hline 10 & 17 & 13 \\\hline 5.5 & 30 & 5 \\\hline 4.5 & 35 & 6 \\\hline 3.5 & 40 & 3 \\\hline 28 & 9 & 15 \\\hline\end{array}$$ Interpret the intercept. Does this make sense?

---

Definitions:

Nitrogenous Base

A molecule found in DNA and RNA that encodes the genetic information in cells.

DNA

A molecule comprising nucleotide chains that encode genetic information vital for the development, functioning, and reproduction of all living organisms and many viruses.

RNA

Ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins.

Uracil

One of the four nucleobase components of RNA, it pairs with adenine during RNA transcription and replaces thymine found in DNA.