HWK #1 - Source: the Cincinnatti Enquirer 4) See B and C 5)...

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Homework #1 Problem #18 - a,b,c on page 332 0.9 1 1.2 2.2 1.9 3.6 2.8 5.2 1.8 2.1 6.8 1.3 3 4.5 2.8 2.3 2.7 5.7 4.8 3.5 2.6 3.3 5 4 7.2 9.1 2.9 3.6 7.3 9 A) 3.8 Classes: Frequency: 0 0 <=0 B) 95% CI = Tinv 2.05 2 6 >0 to <=2 Stdev 2.26 4 14 >2 to <=4 n 30 0.84 6 5 >4 to <=6 8 3 >6 to <=8 C) 3.8 +/- .842328 10 2 >10 BFDA 1) Fast Food Drive Through Order Times 2) How Long Do Drive Through Orders Take To Fill 3) Wendys, McDonalds, and Burger Kind Drive Through Times
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Unformatted text preview: Source: the Cincinnatti Enquirer 4) See B and C 5) based on a sample of 30 visits I estimate that the average fast food drive through wait time during the summer of 2000 with 95% confidence is 3.8 +/- .842328 minutes...
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