Question: 1. In a study of material strength, two separate material were tested to see how much tensile strength each material can hold without breaking. 19

1. In a study of material strength, two separate material were tested to see how much tensile strength each material can hold without breaking. 19 tests were conducted with Material A with a standard deviation of 31.3 MPa. Then 26 tests were conducted with Material B and found that it had a standard deviation of 35.2 MPa. a) Find a 95% confidence interval for b) At 1% level of significance, can one conclude that there is a difference in the standard deviations

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