Question: 4.) Nick created a table to manually calculate the sample variance of data, which consists of strictly positive observations. Unfortunately, he accidentally spilled his coffee,

4.) Nick created a table to manually calculate the sample variance of data, which consists of strictly positive observations. Unfortunately, he accidentally spilled his coffee, causing some of the numbers on the table to become unrecognizable. Observation | |22 |z % | (z )2 #1 " N 3 n 49 E | = 0 #3 1| m u g #4 u Total [12]/m| m m Complete the following problems, and be sure to justify your answers with the necessary work. a.) Find 7. b.) Help Nick by recovering all the missing numbers from the table. c.) Calculate the sample variance, rounding to 2 decimal places

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