Answer:
Correct option is (a).
Step-by-step explanation:
The dependent <em>t</em>-test (also known as the paired <em>t</em>-test or matched-samples <em>t</em>-test) compares the two means associated groups to conclude if there is a statistically significant difference amid these two means.
We use the paired <em>t</em>-test if we have two measurements on the same item, person or thing. We should also use this test if we have two items that are being measured with a unique condition.
For instance, an experimenter tests the effect of a medicine on a group of patients before and after giving the doses.
Or in case of testing the level of reading comprehension of students before and after the speed-reading class we use t-test for dependent means.
The assumptions of paired <em>t</em>-test are:
- The dependent variable that is tested should be continuous
- The observations are independent
- The dependent variable is normally distributed
- There should not be any outliers.
Since the data consists of matched pair, both the samples must be of the same size.
Thus, the correct option is (a).
Answer:
a
Step-by-step explanation:
√5/11
<em>This</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>rational </em><em>number</em><em> </em><em>because</em><em> </em><em>rational</em><em> </em><em>numbers</em><em> </em><em>are</em><em> </em><em>values</em><em> </em><em>which</em><em> </em><em>can</em><em> </em><em>be</em><em> </em><em>expressed</em><em> </em><em>as</em><em> </em><em>a</em><em> </em><em>fraction</em><em> </em><em>and</em><em> </em><em>√</em><em>5</em><em>/</em><em>1</em><em>1</em><em> </em><em>is</em><em> </em><em>already</em><em> </em><em>a</em><em> </em><em>fraction</em><em>.</em>
As far as I can tell, that is as far as the expression can be simplified :)
