Test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected. A manufacturer uses a new production method to produce steel rods. A random sample of 37 steel rods resulted in lengths with a mean a+1 and standard deviation of 4.7 cm. At the 0.10 significance level, test the claim that the new production method has mean 5.5 cm, which was the mean for the old method. a=2

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A: Sample size n =20 Sample mean=73 Population standard deviation =4 NOTE:- According to bartleby…

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A: Given that  α=0.10That is,α=10%Level of significance =10%

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

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

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A: Givensample Mean(x)=11population average(μ)=17standard error(SE)=3

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A: Given: SS = 10800 Sample Size (n) = 1201

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A: Given,X1=42, σ1=4.7, n1=35X2=45, σ2=4.4 , n2=35and level of significance α=0.10

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