An unproven statement or proposition about a factor or phenomenon that is of interest to the researcher is called a theory

A factory manager collected a sample of ten (10) packets of 3-in-1 coffee and the weights (in grams) of each packet are recorded as follow:

25 23 26 28 24 21 26 24 25 27. Calculate (a) the mean weight of a packet of 3-in-1 coffee. (b) the sample standard deviation of the data collected. (c) find a 90% confidence interval for the weights of the 3-in-1 coffee.

Which of the following is least likely to be representative of age bias?

A) Young and energetic B) Three years of experience C) Entry level D) Senior E) Mature