Hypothesis Testing

Is a statement about the parameters of a model

• A statistical hypothesis

• Confidence Intervals

• Normal distribution

• Experimental design

If the alpha level is increased from 0.01 to 0.05, then the boundaries for the region of acceptance move farther away from the center of the distribution.

• True

• False

Define a Type I error?

• The failure to reject a false null hypothesis
• Rejecting a true null hypothesis
• The acceptance to reject a null hypothesis
• Accepting a true null  hypothesis

In a random sample of 1000 adult Americans, only 430 could name at least one justice who is currently serving on the US Supreme Court. A claim is that fewer than half of adult Americans can name at least one justice who is currently serving on the US Supreme Court. State the null hypothesis.

• H_o: p <.5, where p is the true proportion of Americans who can name one justice currently serving.

• H_o:p >.5 where p is the true proportion of Americans who can name one justice currently serving.

• H_o:p =.5 where p is the true proportion of Americans who can name one justice currently serving.

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

A Type I error is when: 

• We obtain the wrong test statistic
• We reject the null hypothesis when it is actually true
• We fail to reject the null hypothesis when it's actually false
• We reject the alternate hypothesis when it's actually true

The study of ways to collect, describe, draw conclusions, and make projections from data

• Statistics

• Inference

• Avergage

• Population

A group of objects about which information is to be gained

• Population

• Sample

• Average

• Null hypothesis

A sample is a subset of a population used to gain information about the whole population

• True

• False

The sum of the data divided by the number of data points in the data set

• Mean

• Average

• Population

• Variance

The positive square root of the sample variance

• Standard Deviation

• Variance

• Mean

• Average