A highway department is studying the relationship between traffic flow and speed. The following model has been hypothesized. y = 0 + 1 x + 2 x 2 + where y = traffic flow in vehicles per hour x = vehicle speed in miles per hour The following data were collected during rush hour for six highways leading out of the city. Traffic Flow (y) Vehicle Speed (x) 1,257 36 1,329 45 1,227 35 1,335 45 1,350 50 1,124 30 Enter negative values as negative, if necessary. Show the estimated regression equation (to 3 decimals, if necessary). = + x + x 2 What is the value of the coefficient of determination (to 3 decimals)? Note: report R 2 between 0 and 1. What is the value of the F test statistic (to 2 decimals)? What is the p-value? Select Using = .01, what is your conclusion? Select Predict the traffic flow in vehicles per hour for a speed of 39 miles per hour (to the nearest whole number).

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Answer! if you don’t mind, can you explain

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.