Which layer in an OSI data communication networking model ensures that the entire message sent from a sender to a receiver has been delivered?

The critical value for a one-tail hypothesis test when the population standard deviation is known, the sample size is 30 or more, and ? = 0.01 is ________

A) 2.05 B) 2.33 C) 2.575 D) 2.96

ABC Roofing Company, in good faith, did not entirely finish, but substantially performed a contract it had with StormCo ABC Roofing is not entitled to any payment on the contract

Indicate whether the statement is true or false