4. A lithium battery company claims that the lifetime of a type of battery that it manufactures is more than 250 hours. A surveyor firm wishing to determine whether the claim is justified measures the lifetimes of 24 of the company's batteries. The results are listed below: 271 230 198 275 282 225 284 219 253 216 262 288 236 291 253 224 264 295 211 252 294 243 272 268 Assuming the sample to be random, use the sign test to determine whether the company’s claim is justified at the 0.05 significance level.

4. A lithium battery company claims that the lifetime of a type of battery that it manufactures is more than 250 hours. A surveyor firm wishing to determine whether the claim is justified measures the lifetimes of 24 of the company's batteries. The results are listed below: 271 230 198 275 282 225 284 219 253 216 262 288 236 291 253 224 264 295 211 252 294 243 272 268 Assuming the sample to be random, use the sign test to determine whether the company’s claim is justified at the 0.05 significance level.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 1E

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