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 73. This year 17 students who took second-year calculus passed the placement test. H_0: mu 17;H_a: mu not equal to 17 H_0: mu 17;H_a: mu not equal to 17 H_0: mu 17;H_a: mu not equal to 17 H_0: mu 17;H_a: mu not equal to 17 H_0: mu 17;H_a: mu not equal to 17 Experiments on earning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is 22 seconds for one particular maze. A researcher thinks that playing rap music will cause the mice to complete the maze slower. She

Explanation / Answer

Solution:-

a) option c. H0:=73; Ha:73

b) option c. H0:=22; Ha:>22

c) option d. H0:=890; Ha:<890

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