. Recheck and reconfirm the result of 95% confidence interval for the mean age and household income of subscribers. Explain your results. 3. Age: Population standard deviation 5 : -: 4.02 n-1 Margin error: 0.39 Lower limit: 29.72 Upper limit: 30.5 b. Household income: Population standard deviation: $34,818.21 Margin error: $3,370.25 Lower limit: $71,089.26 Upper limit: $77,829.77 95% confidence interval Household Income Age Explanation for the mean (S) Sample Size (n) 410 410 Sample mean * 30.11 74,459.51 Population Standard Deviation 34,818.21 4.02 E(X - 8)2 11 - 1 Confidence Coeff 0.95 0.95 ???? Lev. of significance a 0.05 0.05 Margin of error 0.39 3,370.25 In - Point estimate = x 30.11 74 459.51 Lower limit 29.72 71,089.26 Upper limit 30.50 77,829.77Household Age Income ($) 38 75,200 30 70,300 41 48 200 28 95,300 31 73,300 32 123.400 32 73,900 26 54.300 26 93,100 34 60,100 33 48.600 35 43,500 28 73,600 30 68 200 30 61,900 30 57,600 33 82.300 28 64.600 27 61,100 23 31,200 30 92,600 28 68.300 41 35,100 29 85,700 33 140,300 30 108,200 29 61,100 33 33.900 30 54.400 30 61,200 36 58,000 33 90,700 28 95,200 28 50,500 28 33,800 35 147,40025 78,900 32 87 200 29 79,300 27 51,800 27 70,900 33 110,900 29 109 400 30 43.800 32 49,700 23 149,300 26 68,900 34 50,100 35 32,400 31 82,700 29 104.300 25 49,600 34 36,500 38 65,500 34 110,800 32 38,100 33 70,700 27 39,800 30 60,600 32 48 200 33 108,700 26 71,300 29 110,800 36 120,300 38 130,000 31 60,300 31 70,300 31 100,700 30 72,300 30 45,800 24 51,600 34 48 200 39 87,900 27 89.600 31 56,100 32 93,60037 100.300 29 96.000 31 105,500 27 76.400 31 77,100 32 62.300 30 52.700 26 59,000 32 42,200 32 83.500 26 28 200 24 103.500 25 35 100 28 36,80031 92,600 33 66 200 32 45,700 28 60.500 27 110,600 30 60.300 29 75,700 28 70,100 29 42,100 32 41 700 33 96,900 23 65,700 29 50,200 31 61.700 33 44.500 37 51,900 28 119,100 27 49 200 33 39,000 31 35,000 30 104,700 23 49,300 33 74.000 31 57 100 24 51,400 35 62,100 36 103,000 24 97,900 25 123,100 26 322,500 31 54.800 26 66,500 26 33,700 28 73,600 26 71,300 34 74.200 32 70.000 30 40.800 29 72,500 23 53,30028 45.600 25 73,900 35 83,600 31 124,700 35 101,600 32 205,900 29 69.700 34 95,700 30 46 100 29 118,600 42 65.400 37 149.300 32 125,000 33 39,800 36 83,500 32 38,700 35 102,400 20 57,700 30 16,200 31 43,100 28 43,700 24 39.600 30 127,500 23 33,500 29 48,100 33 52,800 24 54.800 25 46,500 38 60.400 22 202,400 32 71,300 28 62,800 32 43,900 33 52,200 32 64.400 24 77.400 23 65.900 23 54,100 38 77,400 29 85,90028 148.600 29 82,100 36 64.400 35 86,200 34 177,100 23 68.300 31 67.900 28 57,300 33 83,600 31 77,500 26 61,700 38 85,600 28 59,900 27 43,100 31 65,700 34 80,500 29 88.400 27 40,200 26 84.000 33 34.400 33 55,800 34 64.900 31 41 100 37 39.100 27 58,200 32 46.500 25 45 100 31 69.900 38 63,700 31 40,500 28 62,600 29 73.400 34 35,000 35 114,000 30 70,800 32 60,300 31 78,700 29 179,700 31 157,200 31 67,30022 49,800 19 43.400 31 71,100 22 42,100 26 42,200 34 63,300 37 55,700 36 107,900 27 44 800 32 94,700 27 112,700 32 114,900 24 112,700 38 60.900 33 137,800 19 47,200 33 70,900 25 52,000 27 166,500 35 88,000 29 41 800 31 60,300 29 53,400 31 46,700 32 59,600 22 27,700 29 48 900 28 56,600 26 32,500 33 74,500 35 69.800 27 48 100 33 95,900 30 76,500 28 43,700 35 72,700 34 140,100 28 76,600 30 65,300 37 161,10032 64.900 21 59.800 31 87.900 31 174,900 23 40,700 34 36,700 31 167,800 28 168,500 30 112,100 25 65,500 32 73,500 30 59,100 28 73,900 33 120,800 34 25,100 34 137,900 33 70,200 26 90,900 28 65,500 23 86,200 31 45 900 28 76,000 29 82,700 30 57,400 30 53,700 31 29,900 22 94,800 34 67.300 30 41 200 34 70.400 25 120,600 32 63,900 31 98.800 29 53,300 28 30,000 26 93,200 26 84.100 26 124,000 29 73,400 32 45,50037 88.400 32 74.900 33 51,700 36 78,700 30 30,700 31 56,000 28 83 400 25 201,700 29 71,600 31 59,000 32 57,300 32 91,900 38 68 300 35 93,900 34 61,200 33 128,800 32 77,900 26 67,700 23 63,300 32 55,000 25 100,700 27 148,000 22 59,600 33 51,600 33 48 400 29 58,500 33 153,000 33 86,800 42 46.400 28 36,900 27 46,900 35 57 400 31 91,200 32 62,100 34 38,800 24 90,200 30 47 100 28 159,200 32 52,700 34 73,40031 58,900 33 81,100 31 68.400 29 55,700 25 45,400 29 59,600 25 47,700 30 57,200 28 47,300 32 58,300 34 47,800 33 61,600 24 64,000 30 87.400 25 56,200 26 100,600 31 51,100 29 90,100 31 50,800 36 62,500 34 37.400 24 102,700 28 68.400 34 68,800 31 108,000 31 200,500 30 123,000 38 64.300 29 72,600 21 81,500 32 57,000 27 101,500 29 67,600 32 70,200 32 64,800 29 70,800 35 50,300 36 30,300 32 61,700 25 103,50029 33.400 22 51,700 28 76.400 29 47.400 29 118,800 29 61 300 32 97,900 30 67.400 29 82,000 30 60,700 38 98,800 32 61,800 27 49.600 29 54.700 28 153,300 33 94.400 32 39,500 35 72.400 27 93 200 29 161 400 30 56,100 34 95,000 24 94.100 30 24.300 28 49.400 23 41,200 26 81,800 30 62.400 26 117,800 24 100,100 33 94.100 30 59.300 25 89,500 24 88,900 35 53,200 34 58,600 36 54.200 29 38 500 27 69,800 30 66,200