AP Stats - Inference

Front

What does the null hypothesis (H0) always contain?

Back

The null hypothesis always contains an '='.

Front

What type of statistical procedure results in an estimate of an unknown parameter?

Back

Confidence Interval.

Front

What do we do when the P-value is greater than alpha?

Back

Fail to reject H0.

Front

Which of the following is NOT a condition for a t-test?

Back

np > 10 and n(1-p) > 10.

Front

How can you reduce both Type I and Type II errors?

Back

Increase the sample size.

Front

What is a Type I error?

Back

Rejecting the null hypothesis when it is true.

Front

What is a Type II error?

Back

Failing to reject the null hypothesis when it is false.

Front

What is the significance level (alpha) in hypothesis testing?

Back

The probability of making a Type I error.

Front

What is a confidence interval?

Back

A range of values used to estimate an unknown parameter.

Front

What does it mean to 'reject the null hypothesis'?

Back

It means there is sufficient evidence to support the alternative hypothesis.