Coffee or Tea??? By Selin Ergun Lauren Freund Period 5.

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 μ 1 = coffee  μ 2 = tea  Null hypothesis: μ 1 ≤ μ 2  Alternative hypothesis: μ 1 > μ 2 *claim*  L1 (18, 24, 22)  L2 (11, 19, 13) Data

Transcript of Coffee or Tea??? By Selin Ergun Lauren Freund Period 5.

Coffee or Tea??? By Selin Ergun & Lauren Freund Period 5 Question: Which drink is ordered more at the Del Mar Highlands Starbucks: coffee or tea? Hypothesis: Customers prefer coffee drinks to tea at Starbucks Q + H 1 = coffee 2 = tea Null hypothesis: 1 2 Alternative hypothesis: 1 > 2 *claim* L1 (18, 24, 22) L2 (11, 19, 13) Data N = 3 Df = 2 CL:.90 =.10 TS: t= P= Sample-T-Test x 1= (avg. coffee per day, per hour) x 2= (avg. tea per day, per hour) Sx 1 = Sx 2 = Tint: (16.183, ) 2- Sample-T-Test invT (.90,2) = CV: t = TS: t= p-value =.0422 < RTN RTN, we support the claim that customers prefer coffee to tea at Del Mar Highlands Starbucks. We went to Starbucks for three days and collected data by keeping tallies of whether or not customers ordered tea or coffee related drinks. We predicted that customers would order more coffee based beverages than tea beverages. We then conducted 2- Sample T-Test from the data we collected. We found evidence that more customers order coffee related beverages than tea beverages. We understand that this is not necessarily true among all Starbuckss, but this was the evidence and conclusion true for the Del Mar Highlands Starbucks. Conclusion + Summary Are there any questions? Thank you!!!