## The decision rule is: Reject H0 if Z -1.960 or if Z 1.960.

In other words, the simplest correction is to move the cut-off point for the continuous distribution from the observed value of the discrete distribution to midway between that and the next value in the direction of the null hypothesis expectation.

In this setting, the p-value is based on the hull hypothesis and has nothing to do with an alternative hypothesis and therefore with the rejection region.

## Support or Reject Null Hypothesis in Easy Steps

**Sample question:** A researcher claims that Democrats will win the next election. 4300 voters were polled; 2200 said they would vote Democrat. Decide if you should support or reject null hypothesis. Is there enough evidence at α=0.05 to support this claim?

## 12/03/2017 · Null Hypothesis - Why reject it

After you do a statistical test, you are either going to reject or accept the null hypothesis. Rejecting the null hypothesis means that you conclude that the null hypothesis is not true; in our chicken sex example, you would conclude that the true proportion of male chicks, if you gave chocolate to an infinite number of chicken mothers, would be less than 50%.

## Test statistic/rejecting the null hypothesis? | Yahoo …

Does a probability of 0.030 mean that you should reject the null hypothesis, and conclude that chocolate really caused a change in the sex ratio? The convention in most biological research is to use a significance level of 0.05. This means that if the *P* value is less than 0.05, you reject the null hypothesis; if *P* is greater than or equal to 0.05, you don't reject the null hypothesis. There is nothing mathematically magic about 0.05, it was chosen rather arbitrarily during the early days of statistics; people could have agreed upon 0.04, or 0.025, or 0.071 as the conventional significance level.

## English examples for "rejecting the null hypothesis" ..

Basically, you reject the null hypothesis when your test value falls into the . There are four main ways you’ll compute test values and either support or reject your null hypothesis. Which method you choose depends mainly on if you have a proportion or a .

## Null Hypothesis Example P Value

Hello, thanks for the videos it is very illustrative, but i have one question i dont understand, why we reject the null hypothesis when the p value less than .05?

## Hypothesis testing - Handbook of Biological Statistics

If you have a , or are asked to find a p-value, follow these instructions to support or reject the null hypothesis. This method works if you are given an *and *if you are *not* given an alpha level. If you are given a , just subtract from 1 to get the alpha level. See: .