The security of two software systems are compared. A total of 225 security tests (fake attacks) were carried out on System 1 and, in 100 of them, the system was unaffected. On the other hand, 175 tests were conducted on System 2 and, in 40 of them, the system remained unaffected. Help test engineers decide whther there is a meaningful difference between the security levels of two systems (measured by the proportion of unsuccessful attacks) by building a confidence interval. Click here to view page 1 of the standard normal distribution table, Click here to view page 2 of the standard normal distribution table With 99% confidence, the engineers can conclude that the difference among security levels p, - P2 will be between and (Round to three decimal places including any zeros.) Obviously, the interval V This means, the case p, - p2 = 0 excluded from 99% of all possible values p, - p2 can take. Pi - P2 P2 The security of two software systems are compared. A total of 225 security tests (fake attacks) were carried out on System 1 and, in 100 of them, the system was unaffected. On the other hand, 175 tests were conducted on System 2 and, in 40 of them, the system remained unaffected. Help test engineers decide whther there is a meaningful difference between the security levels of two systems (measured by the proportion of unsuccessful attacks) by building a confidence interval. Click here to view.page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. With 99% confidence, the engineers can conclude that the difference among security levels p, -P2 will be between and (Round to three decimal places including any zeros.) Obviously, the interval This means, the case p, -P2 =0 excluded from 99% of all possible values p, - P2 can take. does not contain contains The security of two software systems are compared. A total of 225 security tests (fake attacks) were carried out on System 1 and, in 100 of them, the system was unaffected. On the other hand, 175 tests were conducted on System 2 and, in 40 of them, the system remained unaffected. Help test engineers decide whther there is a meaningful difference between the security levels of two systems (measured by the proportion of unsuccessful attacks) by building a confidence interval. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. With 99% confidence, the engineers can conclude that the difference among security levels p, - p2 will be between and (Round to three decimal places including any zeros.) Obviously, the interval V This means, the case p, - P2 =0 V excluded from 99% of all possible values p, - P2 can take. is not is