Question: A survey of 120 families showed that at least 78 had a computer at home. Find the 99% confidence interval of the true proportion of families who own a home computer. p p p p Steps to derive 1 The problem is to find the true proportion of families who own a home computer2 Sample proportion, p ˆ 7 8 1 2 0 q ˆ p ˆ 3 For 99% confidence interval, α = 1 - 0.99 = 0.01 and z ∝ 4 The 99% confidence interval for the true proportion is:p ˆ z ∝ p ˆ q ˆ n p p ˆ z ∝ p ˆ q ˆ n 5 0.65 - 2.58( 0 . 6 5 ) ( 0 . 3 5 ) 1 2 0 p ( 0 . 6 5 ) ( 0 . 3 5 ) 1 2 0 6 0.65 - 0.112 < p 7 0.538 < p 8 53.8% < p 9 So, we are fairly 99% confident, that the families who own a home computer is between 53.8% and 76.2%.Hence the right answer is Option C Click Here To Go Back Use the change of base formula to evaluate log0.1 21... Solve for x.14 + 14(- x + 2) = 8x - 3(5 + x).. Use the change of base formula to evaluate log24 2... Find the property illustrated by the relation: |3.5s| + |11s| = |11s| + |3.5s|.. Use the change of base formula to evaluate log0.7 26... Use the change of base formula to evaluate log21 6... Use the change of base formula to evaluate log0.1 28... Use the change of base formula to evaluate log22 3... In the figure, PR = 52 cm, a = 2, b = 4 and c = 15. Find PQ... Use the change of base formula to evaluate log20 9... Use the change of base formula to evaluate log0.2 26... Use the change of base formula to evaluate log22 2... Solve for p.18 + 18(- p + 1) = 8p - 2(6 + p).. Use the change of base formula to evaluate log0.8 26... Which of the following model is true for the function y = 20 · (0.46)x, x is a real numbe.. Use the change of base formula to evaluate log21 9... Solve: 3- 3b = (19)1 - 10b.. Find the property illustrated by the relation: |3.7s| + |8s| = |8s| + |3.7s|.. Solve for m.11 + 11(- m + 6) = 15m - 7(8 + m).. Use the change of base formula to evaluate log0.7 28... Find the property illustrated by the relation: |3.6s| + |8s| = |8s| + |3.6s|.. Use the change of base formula to evaluate log0.8 24... Solve for p.18 + 18(- p + 1) = 8p - 2(6 + p).. Use the change of base formula to evaluate log0.1 29... PQ = 5 cm, PR = 12 cm, and Q is between P and R. Find QR... Use the change of base formula to evaluate log0.7 27... Use the change of base formula to evaluate log0.6 19... Use the change of base formula to evaluate log0.7 24... Use the change of base formula to evaluate log0.7 20... Use the change of base formula to evaluate log7 24... Use the change of base formula to evaluate log2 29... Solve: logb x = 5 logb 40 - 3 logb 40.. Use the change of base formula to evaluate log9 21... Solve: logb x = 12 logb 40 - 5 logb 40.. Solve: logb x = 10 logb 48 - 4 logb 48.. Which of the following model is true for the function y = 14 · (0.31)x, x is a real numbe.. Use the change of base formula to evaluate log9 19... Solve: logb x = 14 logb 22 - 7 logb 22.. Which of the following model is true for the function y = 44 × (0.27)x, x is a real .. Solve: logb x = 9 logb 17 - 7 logb 17.. Which of the following model is true for the function y = 22 × (0.47)x, x is a real .. Which of the following model is true for the function y = 16 × (0.37)x, x is a real .. Which of the following model is true for the function y = 42 × (0.16)x, x is a real .. Which of the following model is true for the function y = 30 × (0.28)x, x is a real .. Which of the following model is true for the function y = 20 · (0.13)x, x is a real numbe.. Solve: logb x = 13 logb 34 - 7 logb 43.. Solve for z.13 + 13(- z + 6) = 16ita - 7(9 +z).. Which of the following model is true for the function y = 11 · (0.17)x, x is a real numbe.. Solve for m: 7 + 7(- m + 2) = 8m - 3(5 + m).. Which of the following model is true for the function y = 24 · (0.17)x, x is a real numbe.. Which of the following model is true for the function y = 38 · (0.38)x, x is a real numbe.. Solve for m: 12 + 12(- m + 3) = 12m - 4(8 + m).. Which of the following model is true for the function y = 47 · (0.19)x, x is a real numbe.. Solve for m: 9 + 9(- m + 4) = 11m - 5(6 + m).. Solve for m: 15 + 15(- m + 3) = 12m - 4(8 + m).. Express log4 256 = 4 in exponential form... Express log2 32 = 5 in exponential form... Express log5 3125 = 5 in exponential form... Express log3 81 = 4 in exponential form... Express log3 27 = 3 in exponential form... Evaluate: log2 4.. Solve: 2- 3c = (18)1 - 9c.. Evaluate: log2 16.. Use the change of base formula to evaluate log7 20... Evaluate: log5 25.. Solve: 3- 5a = (181)1 - 7a.. Use the change of base formula to evaluate log5 22... Solve:3- 4y = (181)1 - 8y.. Evaluate: log2 8.. Use the change of base formula to evaluate log3 29... Solve:3- 4x = (181)1 - 9x.. Use the change of base formula to evaluate log5 29... Solve: 2- 2c = (18)1 - 7c.. Solve: 2- 5x = (18)1 - 7x.. Solve: log6 (x2 - 64) = 2.. Choose a word sentence for the algebraic sentence 8z + 3 = 9z - 6 ... Solve: log3 (x2 - 16) = 2.. Choose a word sentence for the algebraic sentence 6y + 3 = 2y - 4 ... Choose a word sentence for the algebraic sentence 3y + 8 = 2y - 1 ... Solve: log12 (x2 - 256) = 2.. Choose a word sentence for the algebraic sentence 3z + 4 = 2z - 5 ... Solve: log9 (x2 - 144) = 2.. Choose a word sentence for the algebraic sentence 10y + 4 = 9y - 5 ... Choose a word sentence for the algebraic sentence 7a + 4 = 9a - 8 ... Choose a word sentence for the algebraic sentence 9c + 7 = 8c - 1 ... Choose a word sentence for the algebraic sentence 7a + 8 = 4a - 9 ... Solve: 2- 2c = (18)1 - 4c.. Choose a word sentence for the algebraic sentence 8a + 3 = 10a - 5 ... Choose a word sentence for the algebraic sentence 5z + 6 = 9z - 2 ... Choose a word sentence for the algebraic sentence 10y + 6 = 2y - 7 ... Choose a word sentence for the algebraic sentence 10y + 4 = 3y - 3 ... Choose a word sentence for the algebraic sentence 8b + 7 = 5b - 3 ... Choose a word sentence for the algebraic sentence 9a + 4 = 2a - 9 ... Solve: 3- 3x = (19)1 - 9x.. Choose a word sentence for the algebraic sentence 8y + 6 = 5y - 9 ... Choose a word sentence for the algebraic sentence 8b + 10 = 9b - 1 ... Choose a word sentence for the algebraic sentence 7x + 6 = 10x - 2 ... Solve: 3- 5a = (181)1 - 6a.. Choose a word sentence for the algebraic sentence 6b + 2 = 7b - 2 ... Solve: 2- 2a = (18)1 - 7a..
