Discuss the below:
Q: In comparing purchases from 2 companies, a sample of 16 purchases from Cambells with the mean $ 11, 045 and Standard Deviation of $ 835 is taken. For a sample of 18 purchases from Rainer mean cost is $ 12,840 and Standard Deviation is $ 1545. At the 5% significance level, can we conclude that the cost from Rainer is higher?