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webassign.net Mail - Baylee.Jordan@ttu.edu List of Certified Centers Alphabetically Hwk2 13 days remaining in your free trial. Purchase access now + 1/11 points ! Previous Answers DevoreStat9 1.?.045 My Notes Ask Your Teache Suppose the value of Young's modulus (GPa) was determined for cast plates consisting of certain intermetallic substrates, resulting in the following sample observations: 116.2 115.5 114.7115.3 115.9 (a) Calculate x GPa Calculate the deviations from the mean. (Enter your answers to two decimal places.) 116.2 115.5 114.7 115.3 115.9 deviation (b) Use the deviations calculated in part (a) to obtain the sample variance and the sample standard deviation (Round your answers to three decimal places.) GPa2 GPa (c) Calculate s2 by using the computational formula for the numerator Sxx. (Round your answer to three decimal places.) GPa2 (d) Subtract 100 from each observation to obtain a sample of transformed values. Now calculate the sample variance of these transformed values. (Round your answer to three decimal places.) GPa2 Compare it to s for the original data The variance in part (d) is greater than the variance in part (b)Explanation / Answer
Solution1:
given data is
mean=577.6/5=115.52
ANSWER:115.52
solutionb:
Solutionb:
sample varaince=s^2
s^2=total/n-1=1.328/5-1=1.328/4=0.332
s^2=0.332
s=sqrt(variance)=ssqrt(0.332)=0.576
s=0.576
Solutionc:
s^2=0.332
Solutiond:
0.332
variance remains same even after subtarcting 100
Gpa 116.2 115.5 114.7 115.3 115.9 mean=xbar=sum/totalmean=577.6/5=115.52
ANSWER:115.52
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