The time it takes to assemble an electronic component is normally distributed with a mean of 17.2 minutes and a standard deviation of 3.1 minutes. The probability is 90% that it will take at least how long to assemble a component?
What will be an ideal response?
P(X > k) = 0.90 ? P[Z > (k - 17.2 )/3.1] = 0.90 (k - 17.2 ) /3.1 = -1.28, ? k = 13.23 minutes
You might also like to view...
Which of the following is the correct journal entry for a return of goods that were purchased on account under the periodic inventory system?
Which of the following liabilities is NOT contingent?
a. A liability to replace a specific defective television set already returned to the manufacturer b. A liability to pay pension benefits if a specific employee lives to retirement c. A liability to pay any adverse judgment for a product liability case currently on appeal d. A liability to pay for books received by a college bookstore under terms that allow for the return for full refund of any books not sold
Of the following, ________ is the least frequently used influence tactic.
A. personal appeals B. coalition tactics C. exchange D. inspirational appeals E. pressure
_____ is based on the principle that a sufficiently large number drawn at random from a population will be representative of the total population.?
A) ?Secondary research B) ?Sampling C) ?Regression analysis D) ?Correlation analysis