The is the one you would believe if the null hypothesis is concluded to be untrue. The evidence in the trial is your data and the statistics that go along with it. All hypothesis tests ultimately use a -value to weigh the strength of the evidence (what the data are telling you about the population). The -value is a number between 0 and 1 and interpreted in the following way:
Compare your to α. Support or reject null hypothesis? If the is less, reject the null hypothesis. If the P-value is more, keep the null hypothesis.
against the alternative hypothesis:
If you trace back the history of science, the null hypothesis is always the accepted fact. Simple examples of null hypotheses that are generally accepted as being true are:
Hypothesis tests are extremely imortant in everyday life.
You won’t be required to actually perform a real experiment or survey in elementary statistics (or even disprove a fact like “Pluto is a planet”!), so you’ll be given word problems from real-life situations. You’ll need to figure out what your hypothesis is from the problem. This can be a little trickier than just figuring out what the accepted fact is. With word problems, you are looking to find a fact that is nullifiable (i.e. something you can reject).
AP Statistics. Hypothesis testing 101 Flashcards | Quizlet
The hypothesis statement in this question is that the researcher believes the average recovery time is more than 8.2 weeks. It can be written in mathematical terms as:
H1: μ > 8.2
Confidence Intervals and Hypotheses Testing for AP …
If your test statistic is positive, first find the probability that is greater than your test statistic (look up your test statistic on the -table, find its corresponding probability, and subtract it from one). Then double this result to get thevalue.
Confidence intervals and hypotheses testing ..
Next, you’ll need to state the null hypothesis (See: ). That’s what will happen if the researcher is wrong. In the above example, if the researcher is wrong then the recovery time is less than or equal to 8.2 weeks. In math, that’s:
H0 μ ≤ 8.2
Hypothesis testing - AP Statistics Practice
Hypothesis testing can be one of the most confusing aspects for students, mostly because before you can even perform a test, you have to know what your is. Often, those tricky word problems that you are faced with can be difficult to decipher. But it’s easier than you think; all you need to do is: