se the data contained in the sheet corresponding to Movies in the attached Excel file and a) Construct a 99% confidence interval estimate of the mean length of all movies. b) Construct a 99% confidence interval estimate of the standard deviation of the length of all movies.   Title Length 8 Mile 110 Alone in the Dark 96 Aviator 170 Big Fish 125 Bourne Identity 119 Break-Up 105 Charlie's Angels: Full Throttle 106 Collateral 120 Crash 113 Daddy Day Care 92 DaVinci Code 149 Eternal Sunshine of the Spotless Mind 108 From Justin to Kelly 81 Harry Potter Goblet of Fire 157 Hostel 94 House of the Dead 90 Last Samurai 154 Million Dollar Baby 132 Pirates of the Carribbean (II) 150 Rollerball 97 S.W.A.T. 117 Secret Window 96 Signs 106 Silent Hill 127 Son of the Mask 94 Spider-Man 2 127 Star Wars III 140 Sum of All Fears 124 The Pianist 150 The Village 108 Van Helsing 132 Vanilla Sky 136 Walk the Line 136 War of the Worlds 116 Wedding Crashers 119   Mean: Point estimate   Confidence level   Confidence interval: Lower limit   Upper limit   Standard deviation: Point estimate   Confidence level   Confidence interval: Lower limit   Upper limit

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