The main purpose of statistics is to test a hypothesis. For example, you might run an experiment and find that a certain drug is effective at treating headaches. But if you can’t repeat that experiment, no one will take your results seriously. A good example of this was the cold fusion...
The rejection region in a hypothesis test is the region in the test statistic's distribution that would lead to the rejection of the null hypothesis. The values that act as the "boundary" of the rejection region are called critical values....
You need two values to find this: The alpha level: given as 5% in the question. The degrees of freedom, which is the number of items in the sample (n) minus 1: 25 – 1 = 24. Look up 24 degrees of freedom in the left column and 0.05 in the top row. The intersection is 1.711...
How to distribute points uniformly through the grid of multiple hexagons? Hi all, I have the following code to draw hexagonal grid. Rad3Over2 = sqrt(3) / 2; [X Y] = meshgrid(-.2:0.2:1.6); n = size(X,1); X = Rad3Over2 * X; ...
The multi-purpose of publicizing a scientific consensus includes a communicative strategy by which scientific institutions accommodate the weighty social a
be found, such as considering another college you've been accepted to that is comparable to your dream school. Also call the admission office and ask if the waitlist is ranked. If it is, find out where you rank—the higher you are on the waitlist, the greater your chance...
For instant messaging apps where millions of messages are sent per minute, it’s vital to find a message delivery model with a suitable bandwidth for simultaneous interactions. For this purpose, we recommend using a publisher/subscriber model instead of using HTTP requests that work unacceptably slo...
Helps find potential issues in software to prevent problems. 5. Verifies all application resources in testing. Tests all features of software with international inputs. 6. Assumes the software is used by a specific group in a specific region during testing. Assumes the software is used glo...
Acritical valuein ahypothesis testseparates therejection region(where the hypothesis will be rejected) from the region where the hypothesis will not be rejected. You could use the equation above to find thez-score; with a littlearithmetic, you can look up a critical value in az-table, or you...
Step 3:Insert the numbers from Step 1 and Step 2 into the test statistic formula: Solving the formula, we get: Z = 8.99 We need to find out if the z-score falls into the “rejection region.” Step 4:Find the z-score associated withα/2.I’ll use the following table of known val...