Computer chips coming off an assembly line are tested for quality and are rated defective (d) or good (g). A quality control inspection carried out every hour tests the chips until a run of two consecutive chips are defective or until four chips have been tested, whichever occurs first. The sample space S for this experiment is S = {dd, gdd, dgdd, dgdg, dggd, dggg, gdgd, gdgg, ggdd, ggdg, gggd, } The probability that a chip is defective is 0.02. We define a random variable Y as the number of defectives found in the quality control inspection. The expected value of the random variable Y is, approximately, a. 0.0799468
b. 2
c. 1.542013
d. 1
e. O

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

The triangles in the diagram are congruent. if mzf = 40°, mza = 80°, and mzg = 60°, what is mzb?

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above