Given that a null hypothesis states that a population mean is equal to 4 and the alternative/research hypothesis states that the population mean is not equal to 4, the test is a ____________. Question 9 options: a) no-tail test b) left one-tail test c) right one-tail test d) two-tail test e) cannot be determinedGiven that a null hypothesis states that a population mean is equal to 4 and the alternative/research hypothesis states that the population mean is not equal to 4, the test is a ____________. Question 9 options: a) no-tail test b) left one-tail test c) right one-tail test d) two-tail test e) cannot be determined