According to the US Census, the average number of rooms (not including bathrooms) in an American home is 5.2 as of 1990. Assume the standard deviation is 1.1. You are using the normal distribution to calculate the 95% confidence interval for the number of rooms in a typical home. How many homes would you need to sample such that the error of the mean from your sample is less than 1

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

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.

Identify this conic section. x2 - y2 = 16 o line circle ellipse parabola hyperbola