Mathematics, 05.11.2020 06:10, katelynn73
To increase sales, an online clothing store began giving a 50% off coupon to random customers. Customers didn't know whether they would receive the coupon until after the final sale. The website claimed that one in five customers received the coupon. Six customers each made purchases from the website. Let X = the number of customers that received the 50% off coupon.
Part A: Is X a binomial random variable? Explain. (3 points)
Part B: What is the mean and standard deviation of X? Provide an interpretation for each value in context. (4 points)
Part C: Two of the six customers receive the coupon with their purchase. Is the store's claim accurate? Compute P(X β₯ 2) and use the result to justify your answer. (3 points)
Answers: 2
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Mathematics, 21.06.2019 21:00, manasangreddy2921
Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d. y +14z
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Mathematics, 21.06.2019 23:30, reycaden
The number of members f(x) in a local swimming club increased by 30% every year over a period of x years. the function below shows the relationship between f(x) and x: f(x) = 10(1.3)xwhich of the following graphs best represents the function? graph of f of x equals 1.3 multiplied by 10 to the power of x graph of exponential function going up from left to right in quadrant 1 through the point 0, 0 and continuing towards infinity graph of f of x equals 10 multiplied by 1.3 to the power of x graph of f of x equals 1.3 to the power of x
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Mathematics, 22.06.2019 01:10, hellicuh
Evaluate 8x2 + 9x β 1 2x3 + 3x2 β 2x dx. solution since the degree of the numerator is less than the degree of the denominator, we don't need to divide. we factor the denominator as 2x3 + 3x2 β 2x = x(2x2 + 3x β 2) = x(2x β 1)(x + 2). since the denominator has three distinct linear factors, the partial fraction decomposition of the integrand has the formβ 8x2 + 9x β 1 x(2x β 1)(x + 2) = correct: your answer is correct. to determine the values of a, b, and c, we multiply both sides of this equation by the product of the denominators, x(2x β 1)(x + 2), obtaining 8x2 + 9x β 1 = a correct: your answer is correct. (x + 2) + bx(x + 2) + cx(2x β 1).
Answers: 3
To increase sales, an online clothing store began giving a 50% off coupon to random customers. Custo...
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