Step 2: Now use the equation with z=1.645, µ=50 from the null hypothesis, sigma=5, and the square root of n=6 to solve for xbar. This solution is called the critical xbar value, or more simply, the ...

What is a P-value? Definition: The probability of observing a result (test statistic) at least as extreme as the one calculated, if the null hypothesis is true. To understand the p-value it’s helpful ...

James O. Berger, Thomas Sellke, Testing a Point Null Hypothesis: The Irreconcilability of P Values and Evidence, Journal of the American Statistical Association, Vol. 82, No. 397 (Mar., 1987), pp. 112 ...

P values (or significance probabilities) have been used in place of hypothesis tests as a means of giving more information about the relationship between the data and the hypothesis than does a simple ...

At the beginning of your experiment, you decided that if the probability was less than 0.01, you would reject your null hypothesis because the deviation would be significant and not due to chance.

It found that 98% recognize the value of null results, which the survey defined as “an outcome that does not confirm the desired hypothesis”. Eighty-five per cent of respondents said it was ...