19. XYZ constructions is a leading company in the construction sector in Delhi . It wants to construct flats in two areas, Indrapuram & Pritampura . The company wants to estimate the amount that customers are willing to spend on purchasing a flat in the two areas . It randomly selected 21 potential customers from Pritampura and 27 from Indrapuram and posed the question, “how much are you willing to spend on a flat?” The data collected from the two areas is shown in table below.
20. The company assumes that the intention to purchase of the customers is normally distributed with equal variance in the two areas taken for the study. On the basis of the samples taken for the study, estimate the difference in population means taking 95% as the confidence level.
21. Proposed Exp. On flats by customers from Indrapuram (in thousand Rs.) 125 165 130 170 126 130 127 145 150 130 135 140 140 150 160 160 120 140 150 145 155 165 145 140 165 135 130 140 145 160 155 150 145 160 155 150 170 160 190 145 180 190 170 180 160 185 165 135 185 Proposed Exp. On flats by customers from Pritampura (in thousand Rs.)