{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Hw8 sol - 16.34(a Margin of error decreases(b The P-value...

This preview shows pages 1–5. Sign up to view the full content.

Homework 8 Solution Chapter 16 16.15 (a) H 0 : The patient is healthy ( or “the patient should no see a doctor”); H a : The patient is ill ( or “the patient should see a doctor”). A Type I error is a false positive – sending a healthy patient to the doctor. A Type II error means a false negative – clearing a patient who should be referred to a doctor. (b) One might wish to lower the probability of a false negative so that most ill patients are treated, especially for serious diseases that require fast treatment. On the other hand, if resources (for example, money or medical personnel) are limited, or for less serious health problems, lowering the probability of false positives might be desirable.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 16.34 (a) Margin of error decreases. (b) The P-value decreases (the evidence against H ± becomes stronger). ( c) The power increases (the test becomes better at distinguishing between the null and alternative hypotheses). Chapter 18 Chapter 19 19.6 (a) A t-distribution with reasonably large df is quite similar to a standard Normal distribution. So, as long as the samples were not too small, we know that the value t=8.37 would have a very small P-value. (b) The smaller sample is 61 students, so we use df=60. . 19.12 We have two small samples (each n=4), so t procedures are not reliable unless both distributions are Normal. Chapter 20...
View Full Document

{[ snackBarMessage ]}

### Page1 / 5

Hw8 sol - 16.34(a Margin of error decreases(b The P-value...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online