Dave's Automatic Door installs automatic garage door openers. The following list indicates the number of minutes needed to install a sample of 10 door openers: (20 points) 30 34 26 48 46 35 59 36 32 44 (a) Complete the table of values below. X X - X (X - X) 2 30 32 26 48 46 35 59 36 34 44 Total = Use the table of values above to answer the following questions: (a) What is the mean number of minutes needed to install door openers? (b) What is the median number of minutes needed to install door openers? (c) What is the range of the number of minutes needed to install door openers? (d) What is the standard deviation of the minutes required to install door openers