4. Tensile strength tests were carried out on two difference grades of wire rod, resulting in the accompanying data. Tensile strength is normally distributed for both grades of wire rod. Assume the population standard deviations are unequal. df= 22.51 Sample Mean (kg/mm²). 123.6 Grade Sample Size Sample SD AISI 1078 14 2.0 AISI 1064 12 107.6 1.3 c) Estimate with the mean difference in strength between the 1078 grade and the 1064 grade with 90% confidence. d) Does the data provide compelling evidence for concluding that the true average strength of the 1078 grade is higher than 123 kg/mm?? Test the appropriate hypotheses using the p-value approach at the .01 level.

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Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: GivenMake Ax1^=42s1=4.9n1=35Make Bx2^=43s2=4.6n2=35α=0.10

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A:

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of​ automobiles, a…

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A: Other parts are not provided by you. Still I have tried to provide you detailed solution

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Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.