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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 = 5.63 + 0.618x.  (The data set included toddlers between roughly 24 and 48 inches.)  Find the predicted weight of a toddler that was 48 inches tall.

The monthly precipitation in Florida has a mean of 100 mm. The values go from 50 mm to 181 mm. Assume that the data is normally distributed. Which of the following is a plausible value for the standard deviation?

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. If only the data for the women was included, the least squares regression equation was  yhat = 16.29+0.44x Interpret the slope(if applicable).

Microsoft has a new online tool that tries to guess the age of the individual in the image. Individuals were told to upload a photo of themselves and have the program determine their age (ToolAge).  After this was determine, the individuals were asked to  enter their real age (True Age). A regression model was made to predict true age based on the tool age. The value of R2 is 29.4%. Interpret R2 (if applicable).

Below is a contingency table from the results of the 2012 General Social Survey. Respondents were asked to identify how much they understood issues facing the country. Responses were broken down by gender.   1:None 2:A little 3:Some 4:Quite a Bit 5:A great deal Male 14 51 140 89 23 Female 16 69 138 58 16   What is the conditional probability that someone knows “a little” given that they were female?

A regression line was found to predict Foreign direct investment (FDI) (net inflows (% of GDP)) based on year for the Lower middle income. The value of R-squared was 0.709. Interpret R-Squared (if applicable).

Below are the results from the 2014 General Social Survey. The respondents were asked if they felt that they were to lose their job or to be laid off in the next 12 months. Very Likely Fairly Likely Not Too Likely Not Likely Row Total Male 17 32 143 323 515 Female 19 25 162 335 541 Total 36 57 305 658 1056   What proportion of females believe that they are very likely be laid off or lose their job in the next 12 months?

The body weight of male college athletes has a mean of 181 pounds. The values go from 121 to 229 pounds.Assume that the data is normally distributed.  Which of the following is a plausible value for the standard deviation?

Which of the following is a discrete quantitative variable about tomatoes grown in a garden?

Does someone’s current age affect what they think is an appropriate retirement age? People were polled about both their current age and what they thought would be an appropriate retirement age. They wanted to predict the “appropriate retirement age” by using their current age. The data below is only for female participants.   The average of current age was 33.15 and the standard deviation was 13.93 . The average of appropriate age of retirement was 62.07 and the standard deviation was 8.10. The value for correlation was 0.1616 .   Find the least squares regression equation.