Assume for a Given Study That the Null Hypothesis Asserts

Assume for a given study that the null hypothesis asserts the expected value of a phenomenon is 10.A research study results in a 95 percent confidence interval reported as [7.142, 9.865].What decision should be made based on this confidence interval?

A) Reject the null hypothesis.
B) Fail to reject the null hypothesis.
C) Retain the null hypothesis.
D) Perform a hypothesis test before making a decision.