Microsoft has a new online tool that tries to guess the age of the individual in the image. Individuals uploaded a photo of themselves and had the program determine their age (ToolAge).  The individuals also entered their real age (True Age). A regression model was made to predict true age based on the tool age. The least squares regression equation was  yhat = 13.28 +0.50x Interpret the slope (if applicable).

In the Spring of 2017, a sample of 102 homes for sale in Gainesville was collected. The sale price and square footage of the homes were recorded.  The least squares regression equation was price = -58857+162.9*foot  For one house, the square footage was 3344 and the price was 433205 dollars. Find the residual.   

In the Spring of 2017, a sample of 102 homes for sale in Gainesville was collected. The sale price and square footage of the homes were recorded.  The least squares regression equation was price = -58857+162.9*foot  For one house, the square footage was 2424 and the price was 299900 dollars. Find the residual. 

Which is not considered a tributary of the MPV?  

Below are the reported heights for five students from Husson College.  Find the sample standard deviation.  69 66 64 72 66

In the summer of 2011, the Chicago libraries recorded the number of participants per branch of the library versus the number of books read from that branch.  They wanted to predict the number of books read at each branch based on the number of participants in the summer program.  The least squares regression equation was  books read = -657.0 +24.74 participants For one branch of the library the number of participants was 286. The number of books read was 5409.  Find the residual. 

A least squares regression equation was computed to predict the weight (lbs) of a 3 year old toddler based on the toddler’s height (in). The equation was yhat =  yhat = 5.63 + 0.618x.  (The data set included toddlers between roughly 24 and 48 inches.)  Find the predicted weight of a toddler that was 27 inches tall.

Below are the recovery times (in days) from a Hip Prosthesis for 5 females. Find the standard deviation.   29   19.2  12.9  28.8  9.5 

Which of the following is a discrete quantitative variable?  

The cigarette taxes among the states have a mean of 168 cents per pack. The values go from 30 to 440 cents. Assume that the data is normally distributed. Which of the following is a plausible value for the standard deviation?