4. For each of the following scenarios. determine which would be the 10 points best method to conduct a hypotheses testing. Mention the names and also in one line what is the reason for conducting the specific test. a) bi d) Compare the average number of hours spent per week on Snapchat for first year, second year, third year and final year students at NSU, based on a random sample of 40 students. The distribution of these samples is approximately normall Do you prefer an online or an offline semester in NSU for FALL 2021? Suppose you want to investigate the relationship between Net Exports and a country's GDP. Based on sample data, can you conclude that there is a positive linear correlation between the two variables. Assume that data of these variables have unknown distributions. The manufacturer of a gasoline additive claims that the use of the additive Luggage; gasoline mileage. A random sample of six cars was selected, and these cars were driven for 1 week without the gasoline additive and then for 1 week with the gasoline additive. Can you conclude that the use of the gasoline additive increases the gasoline mileage? The population of these cars does not follow any known distribution. You want to nd out whether the distribution of restaurants in Dhaka and Chittagong are different or identical