Answer: (D) 
Explanation:

Just a note on writing down these expressions: I recommend using parentheses whenever you can to avoid misinterpretation. An expression 1/x-1/y / 1/x+1/y could be interpreted by someone as 1/x-(1/y / 1/x)+1/y, which is a different thing.
$ 2772 is paid in state income tax
<em><u>Solution:</u></em>
Given that, Tina lives in a state that charges her 4.5% state income tax on her federal taxable income
Federal taxable income = $61,600
<em><u>To find: Amount paid by Tina in state income tax</u></em>
Tax rate = 4.5 %
<em><u>Which means, 4.5 % of $61,600 is paid as tax</u></em>

Here, "of" means multiplication or product

Thus $ 2772 is paid in state income tax
Answer:
the populations from which the samples were drawn have different standard deviations
Step-by-step explanation:
Given that the assumption of homogeneity of variance is the same as the assumption of the independent samples t-test which asserted that all comparison groups possess the same variance
Therefore, if the homogeneity of variance assumption is violated in an independent groups t-test, this means "the populations from which the samples were drawn have different standard deviations."
Step-by-step explanation:
put the value of y and get the value of x.then plot it in graph.(try to get non fractional values)