A researcher wanted to determine if carpeted or uncarpeted rooms contain more bacteria. The table shows the results for the number of bacteria per cubic foot for both types of rooms. A normal probability plot and boxplot indicate that the data are approximately normally distributed with no outliers. Do carpeted rooms have more bacteria than uncarpeted rooms at 9.8 the a= 0.05 level of significance? Full data set a Carpeted Uncarpeted 8.3 11.9 9.1 8 7.1 6.7 12.9 11.6 14.4 11.3 13.8 9.5 11.3 9.9 14.1 E Click the icon to view the Student t-distribution table. What are the null and alternative hypotheses? Ho: Hcarpet Pno carpet versus H1: Hcarpet Pno carpet Calculate the test statistic, to- to =(Round to two decimal places as needed.)

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Author:Amos Gilat
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A researcher wanted to determine if carpeted or uncarpeted rooms contain more bacteria. The table shows the results for
the number of bacteria per cubic foot for both types of rooms. A normal probability plot and boxplot indicate that the data
are approximately normally distributed with no outliers. Do carpeted rooms have more bacteria than uncarpeted rooms at
the a = 0.05 level of significance?
Full data set O
Carpeted
Uncarpeted
11.9
11.3
9.8
8.3
9.1
8
7.1
6,7
12.9
13.8
9.5
11.3
11.6
14.4
9.9
14.1
E Click the icon to view the Student t-distribution table.
What are the null and alternative hypotheses?
Họ: Hcarpet =
Pno carpet versus H1: Hcarpet
Pno carpet
Calculate the test statistic, to-
to = (Round to two decimal places as needed.)
Transcribed Image Text:A researcher wanted to determine if carpeted or uncarpeted rooms contain more bacteria. The table shows the results for the number of bacteria per cubic foot for both types of rooms. A normal probability plot and boxplot indicate that the data are approximately normally distributed with no outliers. Do carpeted rooms have more bacteria than uncarpeted rooms at the a = 0.05 level of significance? Full data set O Carpeted Uncarpeted 11.9 11.3 9.8 8.3 9.1 8 7.1 6,7 12.9 13.8 9.5 11.3 11.6 14.4 9.9 14.1 E Click the icon to view the Student t-distribution table. What are the null and alternative hypotheses? Họ: Hcarpet = Pno carpet versus H1: Hcarpet Pno carpet Calculate the test statistic, to- to = (Round to two decimal places as needed.)
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