Which expression has the same value as the one below? 22 + (negative 32) 22 + (negative 22) + (negative 10) 22 + (22) + (negative 10) 22 + (negative 22) + (10) 22 + 0 + 32

If ∠q = 44°, then m = 44°. true false

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

Astudent is solving a system of equations by substitution and comes up with the solution 3 = 3. assuming that he solved the problem correctly, which of the following can be said about this system of equations?