Answer:
A. The distribution of sample means of the differences will be approximately normal if there are at least 30 years of data in the sample and/or if the population of differences in winning times for all years is normal.
Step-by-step explanation:
In other to perform a valid paired test, one of the conditions required is that, data for both groups must be approximately normal. To attain normality, the population distribution for the groups must be normal or based on the central limit theorem, the sample size must be large enough, usually n > 30. Hence, once either of the two conditions are met, the paired sample will be valid.
Answer:C
Step-by-step explanation:
Looking at number line, the function value always range from positive value from 0 to negative numbers to -1
Well 392 = 300 (Hundred), 90 (Tens), 2 (Ones)
Answer:
Equation: 
Step-by-step explanation:
<em>The question is incomplete as the dimension of the phone was not given.</em>
<em>However, the following explanation will guide you</em>
Given

Required
Determine the Height
Volume is calculated as thus;

Substitute 75 for Volume

Divide through by Area

<em>The above represent the equation to solve for Height</em>
<em>To solve for height, we need the dimension of the phone or the area.</em>
Take for instance; the length and width of the phone is 5 by 5 inches;
The height would be:


