ints to quadric polynomial surface similar to photo? can use some least square process with a vandermonde matrix??

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A: Note: As per my policy i can answer only one question. kindly repost the remaining one 1) Given data…

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A: here given ,  p- value is Between 0.01 and 0.05  significance level = alpha = 0.05

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A: The answer is attached below,

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Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 4.9…

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A: Given Mean=4 Standard deviations=1.6

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A: Given that.   X~N( μ , ?^2 )   μ=15     , ?=6   Z-score =( x - μ )/?

Q: You were interested to know how long do students of mathematics in the school spend studying their…

A: Given,sample size(n)=10degrees of freedom(df)=n-1df=10-1=9α=1-0.95=0.05α2=0.025t0.025(9)=2.262…

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A: From the provided information,

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Q: 39 9 7 38 21 18 a point estimate for the population standar 33 19 24 34

A: The given data is x 7 39 38 33 24 21 9 18 19 34

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Q: Which of the following hypotheses will require a two-tailed test? Women are more concerned with the…

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A: Given,mean(μ)=4.9  yearsstandard deviation(σ)=1.2  years

Q: According to a 2009 Reader's Digest article, people throw away approximately 11% of what they buy at…

A: