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tena 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 arpeted rooms have more bacteria than uncarpeted rooms at the a= 0.01 level of significance? Click the icon to view the Student t-distribution table. What are the null and alternative hypotheses? versus H₁: Ho: Calculate the test statistic, to- ▼ Y (Round to two decimal places as needed.) How find the critical value. Select the correct choice below and fill in the answer box within your choice. Round to three decimal places as needed.) Carpeted 9.9 7 15 8.8 14.8 12.3 8.5 15.6 data set Uncarpeted 13.2 12.7 7.5 4.3 13.2 7.3 6.3 9.7

tena 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 arpeted rooms have more bacteria than uncarpeted rooms at the a= 0.01 level of significance? Click the icon to view the Student t-distribution table. What are the null and alternative hypotheses? versus H₁: Ho: Calculate the test statistic, to- ▼ Y (Round to two decimal places as needed.) How find the critical value. Select the correct choice below and fill in the answer box within your choice. Round to three decimal places as needed.) Carpeted 9.9 7 15 8.8 14.8 12.3 8.5 15.6 data set Uncarpeted 13.2 12.7 7.5 4.3 13.2 7.3 6.3 9.7

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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 3E
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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= 0.01 level of significance? Click the icon to view the Student t-distribution table. What are the null and alternative hypotheses? Ho: Calculate the test statistic, to- to = (Round to two decimal places as needed.) Now find the critical value. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) OA. ta/2= OB. ta= Do carpeted rooms have more bacteria than uncarpeted rooms at the a= 0.01 level of significance? versus H₁: ▼ ▼ OA. Yes, because the test statistic is in the critical region. OB. No, because the test statistic is in the critical region. OC. Yes, because the test statistic is not in the critical region. O D. No, because the test statistic is not in the critical region. 9.9 Carpeted 7 15 8.8 14.8 12.3 8.5 15.6 Full data set D 0 ml Uncarpeted 13.2 12.7 7.5 4.3 13.2 7.3 6.3 9.7
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= 0.01 level of significance? Click the icon to view the Student t-distribution table. What are the null and alternative hypotheses? Ho: Calculate the test statistic, to- to = (Round to two decimal places as needed.) Now find the critical value. Select the correct choice below and fill in the answer box within your choice. (Round to three decimal places as needed.) OA. ta/2= OB. ta= Do carpeted rooms have more bacteria than uncarpeted rooms at the a= 0.01 level of significance? versus H₁: ▼ ▼ OA. Yes, because the test statistic is in the critical region. OB. No, because the test statistic is in the critical region. OC. Yes, because the test statistic is not in the critical region. O D. No, because the test statistic is not in the critical region. 9.9 Carpeted 7 15 8.8 14.8 12.3 8.5 15.6 Full data set D 0 ml Uncarpeted 13.2 12.7 7.5 4.3 13.2 7.3 6.3 9.7
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