Recent content by Jophy Tee

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...