It is desired to test h0: μ = 55 against h1: μ < 55 using α = 0.10. the population in question is normally distributed with a standard deviation of 20. a random sample of 64 will be drawn from this population. if μ is really equal to 50, what is the probability that the hypothesis test would lead the investigator to commit a type ii error?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14