1. A dataset has a mean of 19.50 and a variance of 38. Suppose we add the value 34 to each of the observationsin the dataset. Report the thestandard deviationof the resulting dataset. Report your answer to 2 decimal places.

In a group of 23 students attending a party, the average age is 28.2 years.A 26-year-old student joins the party.

1. Calculate and report theupdated average age for the new group of students. Report your answers to one decimal place.