Does this expression represent the sum 13.76 + 2.8?

14 + 4/100

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

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Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?