lf we reject the null hypothesis wb have aL Together we will work the following

# Lf we reject the null hypothesis wb have al together

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lf we reject the null hypothesis, wb have a^L
Together we will work the following problem: 14.17 The fbltowing table shows the hot dogs bought tiorn a street vendor over the course of eight days ("Demlnd"). Also shown is the temperature li>r each diry in degrees Celsius. Temperature CC) Demand 20 48 1l 30 ?3 36 Iu 40 Tbmperature ("C) Demand 7t8 1? 23 18 4? 21 33 a. Calculate the slope and y-intercept for the linear re- gression equation fbr these data. b. Predict the demand for hot dogs on a day with a tem- perature of | 5"C. c. Verity your results using Excel. 14,18 Use the clata from Problern 14.17 to arNwer the lbllowine quesu()ns: a. Calculute the SS?n. b. Partition the total sunr of squares into thc SSR antl SSE. c. Calculate the sanrple coefficient of determination, d. Test the significance ofthe population coefficient of detcrmination usinq a : 0.05. Your Turn: 14.20 The tollowing data set shows the entrance exam score (Verbal GMAT) lbr each of eight MBA students along with his or her gradc point average (GPA) upon gradualion.

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• Fall '14