The mobile app market is evolving rapidly, and competitors are always on the move. This makes it crucial to thoroughly ...

In order to have enough evidence to reject the null hypothesis, we want our p-value to be as small as possible. The p-value is almost always calculated using a computer. It is possible to learn to use ...

Confidence intervals and hypothesis tests are directly linked. Confidence intervals can be used to check the ... Here's another distinction between what a p-value and CI tells us: a p-value answers ...

Define a test statistic, level of significance, and the rejection region for a hypothesis test. Give the form of a rejection region. Perform tests concerning a true population variance. Compute the ...

An alternative hypothesis (Ha) states there is a statistically significant difference. A one-sample t-test can be used to determine whether your sample comes from a population that is different ...