Table of Contents
What happens when reject null hypothesis is true?
If we reject the null hypothesis when it is true, then we made a type I error. If the null hypothesis is false and we failed to reject it, we made another error called a Type II error.
Is null hypothesis rejected or accepted?
If the P-value is less than (or equal to) , then the null hypothesis is rejected in favor of the alternative hypothesis. And, if the P-value is greater than , then the null hypothesis is not rejected.
Is the null hypothesis never true?
The null hypothesis is always false, when it is false, but it’s true when it’s true. NHST can only reject the null-hypothesis, and when observed differences are not statistically significant, the outcome of a significance test necessarily remains inconclusive.
When the null hypothesis is true?
If the null hypothesis is true, we have a 1-α probability that we will make the correct decision and accept it. We call that probability (1-α) our confidence level. Confidence and significance sum to one because rejecting and accepting a null hypothesis are the only possible choices when the null hypothesis is true.
When the null hypothesis is true there is no possibility of making a Type I error?
When the null hypothesis is true, there is no possibility of making a Type I error. When conducting a hypothesis test about a single mean, other relevant factors held constant, increasing the level of significance α from . 05 to . 10 will reduce the probability of a Type I error.
How do you know if its null or alternative hypothesis?
The null hypothesis states that a population parameter (such as the mean, the standard deviation, and so on) is equal to a hypothesized value. The alternative hypothesis is what you might believe to be true or hope to prove true.
Is hypothesis always true?
Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been encountered, where it is not true.
IS NULL always false?
Yes. NULL evaluates to false, since C considers any non-zero value true and any zero value false. NULL is essentially the zero address and is treated as such in comparisons, and I believe would be promoted to an int for the boolean check.
When the null hypothesis is not rejected it means that quizlet?
Terms in this set (9) If the null hypothesis is not rejected, there is strong statistical evidence that the null hypothesis is true. A type II error is made by failing to reject a false null hypothesis.
When a false null hypothesis is not rejected the researcher has made a?
A type II error is also known as a false negative and occurs when a researcher fails to reject a null hypothesis which is really false. Here a researcher concludes there is not a significant effect, when actually there really is.