If a sample mean is 92, which of the following is most likely the range of possible values that best describes an estimate for the population mean?

A. (82, 114)
B. (80, 112)
C. (78, 110)
D. (76, 108)

Can somebody me out with this question

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?