Your textbook has emphasized that testing two hypothesis sequentially is not the same as testing them simultaneously. Consider the following confidence set below, where you are testing the hypothesis that H0 : β5 = 0, β6 = 0. 
Your statistical package has also generated a dotted area, which corresponds to drawing two confidence intervals for the respective coefficients. For each case where the ellipse does not coincide in area with the corresponding rectangle, indicate what your decision would be if you relied on the two confidence intervals vs. the ellipse generated by the F-statistic.
Definitions:
Short-Run Curve
Refers to a period in economics during which at least one factor of production is fixed, affecting production and cost decisions.
Marginal Product
The change in output resulting from employing one more unit of a particular input while holding all other inputs constant.
Total Product
The total quantity of output produced by a firm for a given quantity of inputs.
Marginal Product
The additional output that is generated by adding one more unit of a specific input, ceteris paribus.
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