80 batteries produced in the morning shift and 100 batteries produced in the afternoon shift in a factory had their lifespans tested.
morning shift--->mean=16.7 hours ; standard deviation=2.3 hours
afternoon shift--->mean=18.2 hours ; standard deviation=1.9 hours
Calculate the mean and...
80 batteries produced in the morning shift and 100 batteries produced in the afternoon shift in a factory had their lifespans tested.
morning shift--->mean=16.7 hours ; standard deviation=2.3 hours
afternoon shift--->mean=18.2 hours ; standard deviation=1.9 hours
Calculate the mean and...
