A laboratory has two large format printers installed. During the installation, the manufacturer has stated that the capacity of the printer is to print 20 maps of A4 size in an hour. Owing to various factors such as different students working on the printers, raw materials etc., there is a variation in the number of prints produced per hour. A researcher has taken a random sample of prints produced in 10 hours for printer 1 and 13 hours for printer 2, respectively. The following data gives the number of prints produced on a sampled hour by the two printers: Printer 1 18 19 19 18 17 19 18 19 18 19 Printer 2 16 17 17 17 16 18 16 16 17 17 16 16 17 Can the researcher ascertain that the variance is from the same population (i.e., population variances are equal)? Consider α = 0.05 as the significance level.
A laboratory has two large format printers installed. During the installation, the manufacturer has stated that the capacity
of the printer is to print 20 maps of A4 size in an hour. Owing to various factors such as different students working on
the printers, raw materials etc., there is a variation in the number of prints produced per hour. A researcher has taken a
random sample of prints produced in 10 hours for printer 1 and 13 hours for printer 2, respectively. The following data
gives the number of prints produced on a sampled hour by the two printers:
Printer 1 18 19 19 18 17 19 18 19 18 19
Printer 2 16 17 17 17 16 18 16 16 17 17 16 16 17
Can the researcher ascertain that the variance is from the same population (i.e., population variances are equal)?
Consider α = 0.05 as the significance level.
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