State the null hypothesis H_0 and the alternative hypothesis H_a in each case. B

Question

State the null hypothesis H_0 and the alternative hypothesis H_a in each case. Be sure to identify the parameters that you use to state the hypotheses. A university gives credit in first-year calculus to students who pass a placement test. The mathematics department wants to know if students who get credit in this way differ in their success with second-year calculus. Scores in second-year calculus are scaled so the average each year is equivalent to a 83. This year 29 students who took second-year calculus passed the placement test. H_0: mu = 29; H_a: mu notequalto 29 H_0: mu 29 H_0: mu > 83; H_a: mu notequalto 83 H_0: mu > 83; H_a: mu = 83 Experiments on learning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is 19 seconds for one particular maze. A researcher thinks that playing rap music will cause the mice to complete the maze slower. She measures how long each of 14 mi

Explanation / Answer

a) Option-D) H0 : = 83, H1 : 83

b) Option-C) H0 : = 19, H1 : > 19

c) Option-D) H0 : = 800, H1 : < 800

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