For 50 randomly selected speed​ dates, attractiveness ratings by males of their female date partners​ (x) are recorded along with the attractiveness ratings by females of their male date partners​ (y); the ratings range from 1 to 10. The 50 paired ratings yield x=6.3​, y=6.1​, r=−0.274​, ​P-value=0.054​, and y=8.22−0.340x. Find the best predicted value of y ​(attractiveness rating by female of​ male) for a date in which the attractiveness rating by the male of the female is x=4. Use a 0.01 significance level.