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Statistics: Informed Decisions Using Data | 4th Edition | ISBN: 9780321757272 | Authors: Michael Sullivan, III
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Which Car Would You Buy? Suppose that you are in the

Chapter 3, Problem 25E

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QUESTION:

Problem 25E

Which Car Would You Buy? Suppose that you are in the market to purchase a car. With gas prices on the rise, you have narrowed it down to two choices and will let gas mileage be the deciding factor. You decide to conduct a little experiment in which you put 10 gallons of gas in the car and drive it on a closed track until it runs out gas. You conduct this experiment 15 times on each car and record the number of miles driven.

CAR 1

228

223

178

220

220

233

233

271

219

223

217

214

189

236

248

CAR 2

277

164

326

215

259

217

321

263

160

257

239

230

183

217

230

Describe each data set. That is, determine the shape, center, and spread. Which car would you buy and why?

Questions & Answers

QUESTION:

Problem 25E

Which Car Would You Buy? Suppose that you are in the market to purchase a car. With gas prices on the rise, you have narrowed it down to two choices and will let gas mileage be the deciding factor. You decide to conduct a little experiment in which you put 10 gallons of gas in the car and drive it on a closed track until it runs out gas. You conduct this experiment 15 times on each car and record the number of miles driven.

CAR 1

228

223

178

220

220

233

233

271

219

223

217

214

189

236

248

CAR 2

277

164

326

215

259

217

321

263

160

257

239

230

183

217

230

Describe each data set. That is, determine the shape, center, and spread. Which car would you buy and why?

ANSWER:

Solution:

Step 1 of 3:

We have the data of the number of miles recorded for the car from 15 experiments.

CAR 1

228

223

178

220

220

233

233

271

219

223

217

214

189

236

248

CAR 2

277

164

326

215

259

217

321

263

160

257

239

230

183

217

230

The claim is to determine the shape, center, and spread and we have to suggest which car to buy.

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