A friend of yours claims that "there has been a global shift in education. The global average for the number of years of education is 9 years". You decide to test this claim by analyzing data from the World Development Indicators. Data for 142 countries in year 2009 shows that the average number of years of schooling was 7.82 with a standard deviation of 2.91. Test your friend's claim that the average years of education is 9 years. Use a two tailed test at the one percent significance level