Are my answers for steps 4 and 5 in each correct ?

Problem 1b: weight vs. age Step 1: Ho: _p_ _= 0 Ha: _p_ at 0 Step 2: Alpha level = _.01{2=.005_ Step 3: Sampling distribution is lit; _ = 30-2 = @ Step 4: Decision Rule: I will reject the Ho if the |_robs_| value falls at or beyond the lJGLlLl of _0.217_, otherwise lwiII fail to reject Step 5: Calculation: \\_robs_! = _0.5341_ Step 6: Summary: Since the |_robs_| of _0.5341_ |_r,cr;it_| of _0.217_, I therefore reject the Ho. is greater than the Step 7: Conclusion: Since _rejection_ occurred, I conclude _that the relationship between them is signicant. Problem 1c: height vs. shoe size m1: Ho:__p_ _= _0_ Ha: _p_ at 0 Step 2: Alpha level = _.02l2=.01 Step 3: Sampling distribution is Qt; _n-2 ll (.0 'P M Step 4: Decision Rule: I will reject the Ho if the |_robs_| value falls at or beyond the |_ccrit_| of _0.463 , otherwise I will fail to reject Step 5: Calculation: \\_robs_/ = _ 0.4649 Step 6: Summary: Since the |_robs_| of _0.4649 _is greater than the Lccrit_| of 0.463 I therefore reject the Ho. Step 7: Conclusion: Since _rejection_ occurred, I conclude _that the relationship between them is significant. 2. Explain the correlation coefficient of determination. (15 points)Data Set Student Ht Wt Age (Yrs) Shoe Size Waist Size Pocket Change 01 64 180 39 07 36 02 018 66 140 31 09 30 125 03 69 130 31 09 25 151 04 63 125 36 07 25 05 011 68 155 24 08 31 151 06 62 129 42 06 32 214 07 63 173 30 08 34 08 138 60 102 26 06 25 067 09 66 180 33 08 30 285 10 66 130 31 09 30 050 11 63 125 32 08 26 032 12 68 145 33 10 28 118 13 75 235 44 12 40 060 14 68 138 43 08 27 050 15 65 165 55 09 30 022 16 64 140 24 07 31 095 17 78 240 40 09 38 109 18 71 163 28 07 32 014 19 68 195 24 10 36 005 20 66 122 33 09 26 170 21 53 115 25 07 25 036 22 71 210 30 10 36 050 23 78 108 23 07 22 075 24 69 126 23 08 24 175 25 77 215 24 12 36 041 26 68 125 23 08 30 036 27 62 105 50 06 24 28 235 69 126 42 09 27 130 29 55 140 42 08 29 014 30 67 145 30 08 30 050