The percentage of titanium in an alloy used in aerospace castings is measured in 51 randomly selected parts. the sample standard deviation is s = 0.36. construct a 95% two-sided confidence interval for σ. assume population is approximately normally distributed. round your answers to 4 decimal places.

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.