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

Question

State the null hypothesis H_0 end the alternative hypothesis H_a in each case. Be sure to identity 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 78. This year 17 students who took second-year calculus passed the placement test. H_0: mu 17 H_0: mu > 78; H_a: mu = 78 Experiments on learning in animals sometimes measure how long It takes a mouse to find its way through a maze. The mean time is 23 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 16 mi

Explanation / Answer

a)

Null Hypothesis:

H0: Mu=78

Alternative Hypothesis:

Ha: Mu is not equals to 78.

b)

Null Hypothesis:

H0: Mu=16

Alternative Hypothesis:

Ha: Mu < 16

c)

Null Hypothesis:

H0: Mu=920

Alternative Hypothesis:

Ha: Mu < 920.

.

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