A car manufacturer has recently held 3-day road side exhibits on the introduction of a new model of its deluxe cars. The number of sales personnel employed at each of a sample of 10 exhibitions and the number of cars booked at each one are given as follows:

Using these data, regress the number of cars booked on the number of salesmen, and obtain the regression equation. Show the original data and the regression line on graph. Estimate the number of cars booked if 10 salesmen are employed on an exhibition.

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No. of Salesmen : 5 8 6 8 9 3 5 466 No. of Cars Booked: 132 160 148 156 168 102 142 98 152 142