Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Chapter 10.3, Problem 80E
Phyllodes Tumors. Phyllodes tumors of the breast are rare tumors that represent less than one percent of growths in the breast. Researchers I. Youn et al. presented characteristics of phyllodes tumors in the article “Phyllodes Tumors of the Breast: Ultrasonographic Findings and Diagnostic Performance of Ultrasound-Guided Core Needle Biopsy” (Ultrasound in Medicine and Biology, Vol. 39, No. 6, pp. 987–992). The following table provides summary statistics for the sizes, in millimeters (mm), of independent samples of benign and malignant phyllodes tumors.
| Malignant | Benign |
|
|
|
| s1 = 38.5 | s2 = 26.6 |
| n1 = 52 | n2 = 116 |
At the 1% significance level, do the data provide sufficient evidence to conclude that, on average, malignant phyllodes tumors are larger than benign phyllodes tumors?
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Chapter 10 Solutions
Introductory Statistics (10th Edition)
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