Statistics and Probability – Grade 11 Core Subject

A set of flashcards based on the lesson content from Statistics and Probability for Grade 11, focusing on key concepts, hypotheses, and types of tests.

What is the null hypothesis denoted by?

H0

What is the alternative hypothesis denoted by?

Ha

What does the level of significance (α) indicate?

The probability that the test statistic will fall in the rejection region when the null hypothesis is true.

What type of error is made when a true null hypothesis is rejected?

Type I error

What type of error is committed when a false null hypothesis is not rejected?

Type II error

What does a one-tailed test imply?

The rejection region is on one side of the distribution.

What does a two-tailed test imply?

The rejection region is on both sides of the curve.

How is the critical value used in hypothesis testing?

It indicates the point beyond which lies the rejection region.

What symbols are used in one-tailed tests for alternative hypotheses?

or < (inequality symbols)

What symbol is used in two-tailed tests for alternative hypotheses?

≠ (not equal to symbol)