According to an airline, flights on a certain route are on time 80% of the time. Suppose 15 flights are randomly selected and the number of on-time flights is recorded. (a) Explain why this is a binomial experiment.
(b) Find and interpret the probability that exactly 9 flights are on time.
(c) Find and interpret the probability that fewer than 9 flights are on time.
(d) Find and interpret the probability that at least 9 flights are on time.
(e) Find and interpret the probability that between 7 and 9 flights, inclusive, are on time.

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Solve the equation.then check your solution 8=1.88+a

Evaluate 8x2 + 9x − 1 2x3 + 3x2 − 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 − 2x = x(2x2 + 3x − 2) = x(2x − 1)(x + 2). since the denominator has three distinct linear factors, the partial fraction decomposition of the integrand has the form† 8x2 + 9x − 1 x(2x − 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 − 1)(x + 2), obtaining 8x2 + 9x − 1 = a correct: your answer is correct. (x + 2) + bx(x + 2) + cx(2x − 1).