A calibration laboratory has been measuring a one-kilogram checkweight by the same procedure for several years. They have accumulated several hundred measurements, and the SD of these measurements is 18 micrograms. Someone now sends in a one-kilogram weight to be calibrated by the same procedure. The lab makes 50 measurements on the new weight, which average 78.1 micrograms above 1 kilogram, and their SD is 20 micrograms. Assume the Gauss model. Required:
a. About how many micrograms is the standard error of one measurement?
b. About how many micrograms is the standard error of the average of 50 measurements?
c. Find a 90%-confidence interval for how many micrograms this new weight is above 1 kilogram.

You have learned about the six trigonometric functions, their definitions, how to use them, and how to represent them graphically. the sine, cosine, and tangent trigonometric functions can be paired with their reciprocal functions, cosecant, secant, and cotangent, respectively. think about how each function is related to its reciprocal function. how are the graphs of the reciprocal functions related to their corresponding original functions? what happens to the graphs of the reciprocal functions as x approaches the zeros of the original functions? describe how you would teach friends with different learning styles (visual-spatial, aural-auditory, verbal-linguistic, physical-bodily-kinesthetic, logical-mathematical, social-interpersonal, and solitary-intrapersonal) how to graph the reciprocal functions

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

What is the graph of the function fx x+2/x-3?