Which of the following does not belong?Why?

√4. √10. √16. √197

With finding limits of multi variable !

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.

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?