An institution reports many demographic statistics about countries of the world. Data were collected about the Fertility rate (births per woman) and the female Life Expectancy at birth (in years) for 200 countries of the world. The regression output and a scatterplot of the data are shown below. Complete parts a through d below. Response variable is: Life expectancy 219 total cases of which 19 are missing R squared=71.9% s=4.303 Variable Coefficient Intercept 83.3753 Fertility -4.54984 COLLE Life Expectancy 90 80- 70- 60- 50- 40- Fertility Q G b) is there an outlier? If so, identify it. Which data value is unusual? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A Hospital record for a patient indicates the patient's assigned department, room location and number of days the patient was treated.  Classify each variable as qualitative or quantitative. A sample data table is listed below.   Department Room Location Days of Treatment Maternity A102 2  Cardiac G210 5 Orthopedic C309 3

Is the variable(foot print) below normally distributed or skewed? If skewed, indicate the direction.   male shoe print #1 32.2 #2 30.1 #3 29.0 #4 31.8 #5 29.4

ea surface temperature26.726.726.626.626.626.626.526.526.326.326.126.1Growth0.850.850.850.850.790.790.860.860.890.890.920.92    Make a scatterplot. Which is the explanatory variable? The plot shows a negative linear pattern. Explanatory Variable:

Instructions: Use the technology of your choice (calculator, Excel, GeoGebra, Google Sheets) to find the regression line, the correlation coefficient of the following data sets, and interpolate or extrapolate the requested data. (Round all numbers to the nearest hundredth, when necessary.) Data Set: {(0,7),(1,5),(1.5,3),(2,5),(2.3,3.2),(3,2),(3.5,4)}{(0,7),(1,5),(1.5,3),(2,5),(2.3,3.2),(3,2),(3.5,4)} The regression line is: y=y= Answer −− Answer xx Based on the regression line, we would expect the value of response variable to be Answer when the explanatory variable is 0. (NOTE: This is the yy-intercept.) For each increase of 1 in of the explanatory variable, we can expect a(n) Answerdecreaseincrease of Answer in the response variable. (NOTE: This is the slope.) If x=2.5x=2.5, the yˆ=y^= Answer. This is an example of Answerextrapolationinterpolation. The correlation coefficient is r=r= Answer.

Given the scatter plot below, which of the following describes the strength and direction of the data? 10 Weak negative correlation Strong negative correlation Strong positive correlation Weak positive correlation