HBL Bank Pvt LtD. is studying its ATM use in

HBL Bank Pvt LtD. is studying  its ATM use in the Gulshan-e-Iqbal area of Karachi. A sample of 30 ATMs showed they were used in the given number of times (in seconds) on a particular day, as shown in Table 1. 

a.      Identify the presence of outliers in this dataset

b.      After removing the outliers (if present) from the given dataset, what is the expected or average number of times (in seconds) the ATM is used in the new dataset (if outliers were detected and removed). Show your results with errors in the statistical expected or average value.

  83.24

 64.01

 84.23

 76.20

 84.21

 54.29

 5.11

 59.21

 70.23

 61.01

   63.10

 80.23

 84.21

 73.20

 68.11

 52.19

 65.22

 90.16

 52.16

 177.21

   95.23

 36.15

 48.12

 16.18

 59.32

 84.22

 195.13

 47.18