The purpose of this project is to infer from a random sample of countries some characteristics of all countries in the world. From the class web site link to the CIA Fact Book, select a random sample (using a random number table or random number generator) of 30 countries. For each country observe the following variables:
a. GDP per capita
c. Inflation rate People
d. Female literacy rate
e. Infant mortality rate
f. Predominant religion
Create an Excel file.
1. For the countries in your sample, use Excel to construct the following graphs (4 points each) a. GDP per capita – histogram b. Unemployment – relative frequency histogram c. Inflation – ogive d. Predominant religion – pie chart e. Infant mortality vs. Female literacy – scattergram
2. Construct a 95% confidence interval for the mean GDP per capita. (20 points)
3. Do your data support the hypothesis that more than half of the countries in the world are predominately
4. Determine the sample regression line relating infant mortality to female literacy and plot it on a new scattergram. Test the hypothesis that b1 = 0. Compute a 95% confidence interval estimate for b1.
Construct a confidence interval estimate of average infant mortality for all countries with female literacy rates of .85. Predict with an interval an individual country’s infant mortality rate when female literacy rate is .85. Compute a correlation coefficient and coefficient of determination. (20 points)
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