9 10 11 12 13 14 15 16 17 18 19 20 20 Based on the data provided determine whether the means profit margins are different between regions. Test at a = 0.001 21 W SW NW N 22 22 $13,700 $13,300 $12,900 $2,900 23 23 $12,900 $12,100 $14,300 $4,300 $14,100 $12,600 $15,200 $5,200 24 25 $14,900 $12,100 $13,300 $3,300 26 $14,900 $13,600 $13,600 $3,600 27 $15,300 $12,700 $13,300 $3,300 28 22 $12,200 $14,500 $13,700 $3,700 29 $13,700 $13,400 $12,400 $2,400 30 $14,800 $14,400 $4,400 $13,000 $13,300 $3,300 31 32 33 34 $12,700 $11,400+ $14,400 $4,400 $13,200 $3,200 35 36 37 38 39 40 41 42 Calculate: a) Critical Value(s) b) Test Statistic(s) 43 44 45 c) Should Ho be rejected: Yes or No? 46 47 48 49 d) What is the value of X? 50 51 52 52

Calculate range and its co-efficient from the following statistical data: Profits ( $ in 000's) 125, 50, 30, 20, 80, 85, 90, 160, 180, 100, 170, 185, 155, 200, 140, 145.

vt 14. Calculate trend values by the method of Least Square from the data given below and estimate the sales for 2007. Year 2000 2001 2002 2003 2004 Sales of GA. (Rs. lakhs) 70 74 80 86 90 上

The owner of Showtime Movie Theaters, Inc., would like to predictweekly gross revenue as a function of advertising expenditures.Historical data for a sample of eight weeks follow. Weekly GrossRevenue($1000s) Television Advertising($1000s) Newspaper Advertising($1000s) 9690959295949494 5.02.04.02.53.03.52.53.0 1.52.01.52.53.32.34.22 .5 a. Develop an estimated regression equation with the amount oftelevision advertising as the independent variable.b. Develop an estimated regression equation with both televisionadvertising and newspaper advertising as the independent variables.c. Is the estimated regression equation coefficient for televisionadvertising expenditures the same in part (a) and in part (b)?Interpret the coefficient in each case.d. Predict weekly gross revenue for a week when $3500 is spent ontelevision advertising and $1800 is spent on newspaper advertising.