Chapter 9 practice problems

# Chapter 9 practice problems - 1 a The following are...

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1. a) The following are restaurant ratings by a professional food critic of 15 sampled restaurants separated by a period of exactly 6 months. The critic has assessed/sampled the same 15 restaurants over this time period from a city wide population of 100+ restaurants and given the restaurant a rating (score) out of 650 based on a number of criteria (however, this score is qualitative and subjective). Has the rating for the 15 restaurants changed? Time 1 (Truck pressure 1) Time 2 (Truck pressure 2) 594 579 509 513 527 566 516 588 592 584 503 510 511 535 517 514 538 582 549 567 557 593 568 574 582 597 553 558 424 461 b) Perform a test to see if the above 15 truck tire pressures (total of 8 monster tires on the same truck) measured in pounds per square inch using a digital and accurate gauge has changed (measured from the same 15 trucks) between July 1 and December 1 of the same year. 2. A cartographer tests the time taken by introductory students to perform a set of tasks involving the extraction of information from a set of maps. At the end of the

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Chapter 9 practice problems - 1 a The following are...

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