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9 24 parts a b c pg192 a yhat 5697 084x b coefficient

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9) #24 parts (a), (b), (c) pg192.  a) Yhat = 56.97 + 0.84*x b) Coefficient of determination = 0.7338 c) 40 42 44 46 48 50 52 54 56 58 60 40 45 50 55 60 65 70 75 Ages of Presidents and First Ladies on the first day of the President being in office. First Lady Age (yrs.) President Age (yrs.) 10) #13 to 16 pg 420.  a) H 0 μ  = 5      H 1 μ  < 5 is left-tailed. b) H 0 μ  = 10    H 1 μ  > 10 is right-tailed.  c) H 0 μ  = 1      H 1 μ    1 is two-tailed. d) H 0 μ  = 26    H 1 μ    26 is two-tailed.  11) #17 to 20 pg 420. a) Correct Decision  b) Type I error.  c) Type II error.  d) Correct Decision  12) #24 pg 420. a) There is sufficient evidence to reject   μ  = 100 in favor of  μ    100.

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13) #37 parts (a) to (c) pg 441.  a) The test statistic of the sample = 0.9922 b) H0 is not rejected.  c) H0 is not rejected.  14) # 41 parts (a) to (d) pg 441. a) True  b) False  c) True  d) False   15) # 46 parts (a) to (c) pg 441. a) Yes, H0 is rejected at the alpha = 0.01 level.   b)  Correct decision  c) Type I error
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