Which of the following expressions correctly uses the properties of summations to represent
11
σ (3i²+17)
i=1
11
a) 3σ i²+17
i=1
11
b) 3σ (i²+17)
i=1
11 11
c) 3σ i * σ i+11*17
i=1 i=1
11
d) 3σ i²+11*17
i=1

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?