The equation of the regression line for the lottery jackpot is if] : 10. 9+. 1743?, where x is the amount of the lottery jackpot( in millions) and y is the corresponding number of tickets ( in millions) sold. a) State the slope b) Interpret the slope in the context of the above problem. Find the critical tvalue. Disney claims that the mean "Disney World Wait Times" for the Tower of Terror is more than 30 minutes. Using the first 27 times and a level of significance of 0.01, find the critical t value. Suppose we want to test the claim that the majority of adults are in favor of raising the voting age to 21. Is the hypothesis test lefttailed, righttailed, or twotailed? Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol 91.9.0) for the indicated parameter. Carter Motor Company claims that its new sedan, the Libra, will average better than 25 miles per gallon in the city. Use p, the true average mileage of the Libra