T TEST EXAMPLES FOR PRACTICE
Dr. Rajeshwar Hendre - Statistics t-test examples 1. A random sample of size 16 has 53 as mean. The sum of squares of the deviations takes from mean is 135. Can this sample be regarded as taken from the population having 56 as mean? Obtain fiducial limits of 95 % and 99%. 2. Raja Restaurant near the railway station at Falna has been having average sales of 500 tea-cups per day. Because of development of bus stand nearby it expects to increase its sales. During the first 12 days after the start of new bus stand, the daily sales were: 550, 570, 490, 615, 505, 580, 570, 460, 600, 580, 530 and 526. Can one conclude that sales have increased at 5% level of significance? Daily Sales ( X - X bar) ( X - X bar)^2 550 2 4 570 22 484 490 -58 3364 615 67 4489 505 -43 1849 ...