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

question 155

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) 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 of that day noted. $$\begin{array} { | c | c | } \hline \text { Coffee sales revenue } & \text { Temperature } \\\hline 6.50 & 25 \\\hline 10.00 & 17 \\\hline 5.50 & 30 \\\hline 4.50 & 35 \\\hline 3.50 & 40 \\\hline 28.00 & 9 \\\hline\end{array}$$ Calculate and interpret a 95% confidence interval for the population slope.

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Definitions:

Indorsements

Signatures or stamps placed on a negotiable instrument, such as a check or promissory note, that specify the terms of its transfer or conditions of use.

Payable on Demand

A financial obligation that must be paid whenever the creditor requests it.

Nonnegotiable

Pertaining to something that cannot be transferred or assigned from one party to another, such as a nonnegotiable instrument or document.

Negotiable Instrument

A written document guaranteeing the payment of a specific amount of money, either on demand or at a set time, with the payer named on the document.