2.Researchers wanted to determine if carpeted rooms contained more bacteria than uncarpeted rooms. To determine the amount of bacteria in a room, researchers pumped the air from the room over a petri dish at a rate of 1 cubic foot per minute for eight carpeted rooms and 8 uncarpeted rooms. Colonies of bacteria were allowed to from in the 16 petri dishes. The results are posted below. Do carpeted rooms have more bacteria that uncarpeted rooms at a=0.05. Mean Standard Deviation Carpeted Uncarpeted 11.2 2.677 9.788 3.21

2.Researchers wanted to determine if carpeted rooms contained more bacteria than uncarpeted rooms. To determine the amount of bacteria in a room, researchers pumped the air from the room over a petri dish at a rate of 1 cubic foot per minute for eight carpeted rooms and 8 uncarpeted rooms. Colonies of bacteria were allowed to from in the 16 petri dishes. The results are posted below. Do carpeted rooms have more bacteria that uncarpeted rooms at a=0.05. Mean Standard Deviation Carpeted Uncarpeted 11.2 2.677 9.788 3.21

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter1: Variables, Expressions, And Integers

Section1.5: Adding Integers

Problem 45E

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