Let X1, .,X, be a random sample from f (x; 0) = 0 exp(-8x); x > 0, where Ə= {0:0 > 0}. Find a UMP size- a test of Ho: 0 = 0, versus H : 0 > Og. Q # 3 (а) (b) Check whether there exists a UMP test of size a for testing H,: 0 = 0, versus H;: 0 # 0,? Argue, if exists or does not exist.

the value used in the equation for the t-test for independent means that approximates the sample size is known as the

What is the minimum information that you need to calculate an n^2 effect size from a reported independent samples t test? a. s_(1 )^2, s_2^2 and n_1, n_2b. t and dfc. The M_1 - M_2 value and s_pd. None of the above My answer: B Professor wrote please explain your answer?

Past research has indicated that the average age of death row inmates is 41 years old. researcher would like to determine if the average age has changed. She randomly selects 50 death row inma s and ds their average age to be 37 years old. The hypothesis the statistician wants to test is: a. Ho: µ=37 vs_ Ha: µ ± 41. b. Ho: µ=41 vs Ha: µ< 41. Ho: u = 41 vs. H: u 41 d. Ho: µ=37 vs_Ha: µ< 41. C. 2. If a player at a casino is playing roulette and betting on red, there is a 18 / 38 or 0.474 chance that he will win on any spin of the roulette wheel. If we take a random sample of 300 players betting on red, then p is the proportion of times that the player wins. What is the mean of the sampling distribution of p? t' a. b. What is the standard deviation (os) of the sampling distribution of p? c. If repeated samples of 300 players are taken, what would be the range of the sample proportion of players victories according to the 95 part of the 68-95-99.7 rule" pts) 3. The z statistic for a…