Which of the following pairs of triangles are similar? If they are similar, explain why. Find the scale factor that is less than 1 and state the correspondence. 

  

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The following times (in minutes) to process hot-rolled steel are observed for a random sample of size 10 as follows: 5.4 6.2 7.9 4.8 7.5 6.2 5.5 4.5 7.2 6.2 Consider the data in Exercise 4-17 on the time (in minutes) to process hot-rolled steel for a sample of size 10. (a) Find a 98% confidence interval for the mean time to process hot-rolled steel. What assumptions do you have to make to solve this problem? (b) Find a 95% confidence interval for the variance. (c) Test the hypothesis that the process variability, as measured by the variance, exceeds 0.80. Use α = 0.05. The following times (in minutes) to process hot-rolled steel are observed for a random sample of size 10 as follows: 5.4 6.2 7.9 4.8 7.5 6.2 5.5 4.5 7.2 6.2 Consider the data in Exercise 4-17 on the time (in minutes) to process hot-rolled steel for a sample of size 10. (a) Find a 98% confidence interval for the mean time to process hot-rolled steel. What assumptions do you have to make to solve this problem? (b) Find a 95% confidence interval for the variance. (c) Test the hypothesis that the process variability, as measured by the variance, exceeds 0.80. Use α = 0.05.

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G A 2 B D C are equal Here B3 6 4ABC 4 DEF are similar triangle b... View the full answer