For a test of H0: = 0 against Ha: = 0 with n = 1500,

For a test of H0: μ = 0 against Ha: μ = 0 with n = 1500, the t test statistic equals 0.92.

(a) Find the P-value, and interpret it.

(b) Suppose t = −3.60 rather than 0.92.

Find the P-value.

Does this provide stronger, or weaker, evidence against the null hypothesis? Explain.

(c) When t = 0.92, find the P-value for (i) Ha: μ > 0,

(ii) Ha:μ < 0.