Education levels of girls and boys a development economist is interested in whether average years of schooling of girls and boys are the same in a certain developing country. a random sample of 250 girls yields a mean of 5.1 years, and a standard deviation of 1.2 years. an independent random sample of 280 boys yields a mean of 6.3 years, and a standard deviation of 1.7 years. test the null hypothesis that mean years of schooling is the same in the populations of girls (x population) and boys (y population), against the alternative hypothesis that the population means are different. use a 5% level of significance. there are 8 multiple choice questions for this problem. 8. what are the correct null and alternative hypotheses?
Answers: 3
Business, 22.06.2019 17:40
Aproduct has a demand of 4000 units per year. ordering cost is $20, and holding cost is $4 per unit per year. the cost-minimizing solution for this product is to order: ? a. 200 units per order. b. all 4000 units at one time. c. every 20 days. d. 10 times per year. e. none of the above
Answers: 3
Business, 22.06.2019 19:50
Right medical introduced a new implant that carries a five-year warranty against manufacturerโs defects. based on industry experience with similar product introductions, warranty costs are expected to approximate 2% of sales. sales were $8 million and actual warranty expenditures were $42,750 for the first year of selling the product. what amount (if any) should right report as a liability at the end of the year?
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Business, 22.06.2019 21:00
Identify whether the statements are true or false by dragging and dropping the appropriate term into the bin provided. long-run economic growth is unlikely to be sustainable because of finite natural resources. in the modern economy, countries that possess few domestic natural resources essentially have no chance to develop economically. finding alternatives to natural resources will be very important to long-term economic growth. in the modern economy, human and physical capital are generally less important in productivity than natural resources. in the 19th century, countries with the highest per capita gdp were nearly always abundant in minerals and productive farming land.
Answers: 1
Education levels of girls and boys a development economist is interested in whether average years of...
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