## Answers

X | Y | X * Y | X^{2} | Ŷ | Sxx =Σ (Xi - X̅ )^{2} | Syy = Σ( Yi - Y̅ )^{2} | Sxy = Σ (Xi - X̅ ) * (Yi - Y̅) | |

418 | 18584 | 7768112 | 174724 | 31029.8052 | 6021.7600 | 100118035 | -776458 | |

467 | 29298 | 13682166 | 218089 | 32570.4670 | 16027.5600 | 501406 | 89645 | |

700 | 43616 | 30531200 | 490000 | 39896.4710 | 129312.1600 | 225783681 | 5403386 | |

479 | 31067 | 14881093 | 229441 | 32947.7719 | 19209.9600 | 6136024.4100 | 343326.0600 | |

492 | 36092 | 17757264 | 242064 | 33356.5189 | 22982.5600 | 56281504.4100 | 1137318.3600 | |

383 | 35269 | 13508027 | 146689 | 29929.3325 | 1814.7600 | 44610376.81 | 284529.66 | |

65 | 21239 | 1380535 | 4225 | 19930.7519 | 75845.1600 | 54035730.8100 | 2024437.8600 | |

70 | 11854 | 829780 | 4900 | 20087.9623 | 73116.1600 | 280090348.8100 | 4525387.3600 | |

177 | 30973 | 5482221 | 31329 | 23452.2646 | 26699.5600 | 5679165.6100 | -389398.5400 | |

153 | 27907 | 4269771 | 23409 | 22697.65471 | 35118.76 | 466352.41 | 127975.46 | |

Total | 3404 | 285899 | 110090169 | 1564870 | 285899 | 406148.4 | 773702624.9 | 12770149.4 |

X̅ = Σ (Xi / n ) = 3404/10 = 340.4

Y̅ = Σ (Yi / n ) = 285899/10 = 28589.9

Predictive Confidence Interval of

= 17887.0169 + 31.4421 X

= 36658

= 2.306

X̅ = (Xi / n ) = 3404/10 = 340

= 36658

**95% Predictive confidence interval is (18985 < < 54331)**

My X=597

We were unable to transcribe this image

We were unable to transcribe this image

1 se[yo] ta/2 x 1/[1+ - + n 20-0 SE

ta/2 = t 0.05/2

se[0] =Ý

36658 +2.306 x Unil (597) - 340),一 10 406148 4 × 46522789

My X=597

OA. We can be 95% confident that when there are 597 issues, the proceeds will be between S ands

.
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