Identify the Point(s) on the Surface $z=5 x^{2}+5 y^{2}-4 x+30 y-7$

question 28

Multiple Choice

Identify the point(s) on the surface $z=5 x^{2}+5 y^{2}-4 x+30 y-7$ where the tangent plane is horizontal.

• A) \(( 0,0 , - 7 )\)
• B) \(( - 4,30 , - 1 )\)
• C) \(\left( \frac { 2 } { 5 } , 3 , \frac { 636 } { 5 } \right)\)
• D) \(\left( \frac { 2 } { 5 } , 3 , - \frac { 264 } { 5 } \right)\)
• E) \(\left( \frac { 2 } { 5 } , - 3 , - \frac { 264 } { 5 } \right)\)

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A statistical method to determine if there is a significant difference between the means of two groups, which may have different variances.

Wilcoxon Signed Rank

The Wilcoxon Signed Rank test is a nonparametric statistical test used to compare two related samples to assess whether their population mean ranks differ.

Wilcoxon Signed Rank

A non-parametric statistical hypothesis test used to compare two related samples, matched samples, or repeated measurements on a single sample to assess whether their population mean ranks differ.

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