A medical researcher is working on a new treatment for a certain type of cancer. The average survival time after diagnosis on the standard treatment is two years. In an early trial, she tries the new treatment on three subjects who have an average survival time after diagnosis of four years. Although the survival time has doubled, the results are not statistically significant even at the 0.10 significance level. The most likely explanation is A)the placebo effect is present, which limits statistical significance. B)the sample size is small. C)that although the survival time has doubled, in reality the actual increase is really two years. D)the calculation was in error. The researchers forgot to include the sample size.

Answered: Image /qna-images/answer/9a2d82ab-47c6-4fee-ae5b-f6519dbe405e.jpg

Answered: The most likely explanation is

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A medical researcher is working on a new treatment for a certain type of cancer. The average survival time after diagnosis on the standard treatment is two years. In an early trial, she tries the new treatment on three subjects who have an average survival time after diagnosis of four years. Although the survival time has doubled, the results are not statistically significant even at the 0.10 significance level. The most likely explanation is
	A)	the placebo effect is present, which limits statistical significance.
	B)	the sample size is small.
	C)	that although the survival time has doubled, in reality the actual increase is really two years.
	D)	the calculation was in error. The researchers forgot to include the sample size.