FACT OR BLUFF

The notation 𝜇 and 𝜎 are sample values.

The alternative hypothesis is a statement that there is no significance difference between the two given properties.

In the given, 𝐻𝑜: 𝜇 = 21.5 and 𝐻𝑎: 𝜇 > 21.5 show a one-tailed test since it shows direction of the distribution.

The rejection region for a hypothesis test is also called the critical region.

The two types of significance test are one-tailed and two-tailed test.

The level of significance refers to the degree of significance in which we reject or fail to reject the null hypothesis.

We don’t need to set the level of the significance because we can get 100% accuracy level in testing hypothesis.

A two-tailed test shows that the null hypothesis may be rejected when the test value is on the critical region on either side of the distribution.

Hypothesis testing is basically testing an assumption that we make about the population parameter.

In a two-tailed test, the null hypothesis should not be rejected when the test value is on either of the two critical regions.