hi i was trying this question but i'm having trouble

Is your overall satisfaction with a hotel room correlated with the cost of the room? Suppose that satisfaction scores (in percent) and the median room prices (in Canadian dollars) were recorded for a sample of 12 hotels with the following results: Hotel Median Rate Score Accent Inn 95 80 Comfort Inn 80 75 Motel 6 110 90 Crossways 100 88 Holiday Inn 60 60 Twelve Months 90 82 Econo Lodge 70 70 Paradise 120 93 Days Inn 150 95 Coast Inn 100 95 Best Western 140 90 Travelodge 85 85 Let us use the simple linear regression model taking the median rate as c and the satisfaction score as y . The coefficient of correlation for this data is r = 0.8240 and the regression equation is: y = 50.2712 + 0.3331. For part (a), round to 4 decimal places. (a) Calculate the coefficient of determination = 0.6790 For part (b), express your answer in percent form (i.e. 3.00% instead of 0.03) and round to 2 decimal places. (b) What percent of the variation in satisfaction scores cannot be explained due to the other factors? % For part (c), round to 4 decimal places. (c) What is the slope of the regression equation? | 0.3331 For parts (d), (e) round to 2 decimal places. (d) How much will the score be expected to change if the median rate increases by $30? (e) What would be the best predicted sales for the median rate of $90? (f) Would it be possible to use this regression model to predict the satisfaction score for a hotel with the median room price of $550? The forecast would be reliable, as the median room price of $550 is an outlier. The forecast would be reliable, as the regression equation y = 50.2712 + 0.3331x can be used to predict any score. The forecast would be reliable, as the regression equation y = 50.2712 + 0.3331z can be used to predict any room price. The forecast would not be reliable, as the median room price of $550 is an outlier. None of the above