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

question 90

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:

Rogers

Carl Rogers, an influential American psychologist known for founding the humanistic approach to psychology and developing client-centered therapy.

Humanistic Psychology

A perspective that emphasizes looking at the whole individual and stresses concepts such as free will, self-efficacy, and self-actualization.

Positive Self-concept

Refers to an individual's view of themselves as having positive attributes, leading to higher self-esteem and confidence.

Hermann Rorschach

Swiss psychiatrist and psychoanalyst known for developing the Rorschach inkblot test, a projective psychological test.