How would you work through these questions?

Table 12-5 Botswana's Largest Trading Partners Percentage of Botswana's Exports Belgium 22 India 20 United Arab Emirates 17 South Africa 9 Singapore Source: The World Bank, World Integrated Trade Solution, https://wits.worldbank.org/ CountrySnapshot/en/BWA/textview.Exercise 12-11. The data in table 12-5 indicate the percentage ofexports Botswana sends to each of its five largest trading part- ners. imagine that the mean For the population, all countries, is 18 percent of exports to major trading partners. Calculate a differ- ence of means Men to test the null hypothesis that Botswana's export percentage to its largest trading partners is no diFFerent From the population mean of 18 percent. Use the 95 percent condence level. Show your work. a. What is the observed 1 score? b. What is the rcritical value (using a two-tailed test because the direction of the hypothesis is not specied}? e. Do you accept or reject the null hypothesis and why