Study Guides (248,252)
United States (123,303)
Statistics (13)
STAT 301 (11)
Midterm

Hypothesis testing, types of hypotheses, errors in hypothesis

3 Pages
65 Views
Unlock Document

Department
Statistics
Course
STAT 301
Professor
Brett Hunter
Semester
Fall

Description
30 September Hypothesis Testing Hypothesis testing is a method for using sample data to decide between two competing claims (hypotheses) about a population characteristic. A hypothesis is a statement about the value of a population parameter developed for the purpose of testing. e.g. The mean salary for ALL graduates of four-year business schools is $2,200 per month. The mean monthly income for ALL systems analysts is at least $3,625. Less than twenty percent of ALL juvenile offenders are caught and sentence to prison. Types of hypotheses Null hypothesis – A claim about a population characteristic that is initially assumed to be true. Denoted H . 0 Alternative hypothesis – The competing claim. Denoted H or H . A 1 In carrying out a test of H 0ersus H , tAe hypothesis H will 0e rejected in favor of H only ifA sample evidence strongly suggests that H is fal0e. Two possible conclusions Reject H a0d claim H is tAue Fail to reject H 0 Note: Failing to reject H 0s not the same as saying H is tr0e. We just do not have enough evidence to claim that it is false. Hypothesis for tests comparing a parameter to a value The alternative hypothesis has the following forms HA: population characteristic < hypothesized value HA: “ > “ H A “ ≠ “ The null corresponding to above is H 0 population characteristic ≥ hypothesized value H 0 “ ≤ “ H : “ = “
More Less

Related notes for STAT 301

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit