The owner of boston sports bar believes that, on average, her restaurant is busier on days when the red sox play an away game (a game played at another team’s stadium), but she wants to be sure before adding more staff. to test whether this is true, she takes a random sample of 50 days over the course of the baseball season and records the total daily revenue, along with whether the red sox were playing away that day (1 if yes, 0 if no). using the data provided, perform a regression analysis to determine the effect of red sox away games on revenue. be sure to include the residuals and residual plot in your analysis.

People end up tossing 12% of what they buy at the grocery store. assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. calculate the mean and the standard error for the sample proportion p. b. describe the sampling distribution of p in part a. draw a graph of this probability distribution with its mean and standard deviation. what is the probability that your survey will provide a sample proportion more than 15%? c. d. population proportion? what is the probability that your survey will provide a sample proportion within + 0.03 of the