A pharmaceutical company is testing a new pain relief drug….

A pharmaceutical company is testing a new pain relief drug. They recruit 20 patients with chronic pain and measure their pain levels on a scale of 1 to 10 before taking the drug. The patients then take the drug for one week, and their pain levels are measured again. The company wants to determine if the drug significantly reduces pain levels. What statistical test should be used to analyze the data?

Part 2 Question 4Decide which statistical procedure/test wil…

Part 2 Question 4Decide which statistical procedure/test will be used to answer this question. Explain in one sentence how you came to your decision. A school district wants to determine if students’ math test scores have improved over the past 10 years. They collect a random sample of 50 students who took a standardized math test in 2014 and another random sample of 50 students who took the same test in 2024. At a 5% significance level, is there enough evidence to conclude that the mean math test scores have significantly increased over the past decade?