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(14 Points) The percentage of titanium in an alloy used in aerospace castings is measured in...

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(14 Points) The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The
(14 Points) The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. The sample deviation in these parts is 0.37. Use this information to test for the hypothesis that the true deviation in the percentage of titanium different from 0.25 using a 5% level of significance. Show all work for this problem! Step 1: Step 2: Step 3: Step 4: Step 5: P-value: Step 6 Step 7: 42 a

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solution D Here the null hypothesis is Hor=0.25 2) the alternative hypothers is his 80.25 3) level of significance d=5% 20.05

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