Shorney construction company bids on projects assuming that the mean idle time per worker is 72 or fewer minutes per day. a sample of 30 construction workers will be used to test this assumption. assume that the population standard deviation is 20 minutes. a. state the hypotheses to be tested. anderson, david r.. essentials of statistics for business and economics (p. 435). south-western college pub. kindle edition.

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Graph the equation. select integers for x