CP5070-2021-2B01-Group2-Nick

1. Our Team Chemical Device For our project, we worked on creating a functional tea maker. Its main objective is to combining the heating and infusing process of brewing tea into a single machine, therefore making the tea preparation process more convenient and simpler. In order for it to work, it requires a certain volume of water and a measured amount of tea leaves in order for it to work. The hot water poured on the tea leaves in a tea basket/infuser attachment allows the tea leaves to steep. Different tea types have different brewing requirements, as each tea type has their own optimum brewing time and brewing temperature to extract the best flavour. By conducting some secondary research online, we found that there were some issues plaguing the current models of tea makers in the market. Firstly, tea makers can be quite expensive, especially those with a lot of different functions. Next, modern tea makers tend to be made up of more intricate parts, making them more complex and more

Week 14 (Tutorial) For the tutorial session in week 14, we were introduced to hypothesis testing. Background Information Hypothesis testing refers to the formal procedures used by experimenters or researchers to accept or reject statistical hypotheses. Step 1: State the statistical hypotheses. This involves stating the null hypothesis (H 0 ) and the alternative hypothesis (H 1 ). The null hypothesis states that differences in sample observations result purely from chance and that there is no statistically-significant difference in a set of given observations. The alternative hypothesis states that differences in sample observations are statistically-significant and influenced by some non-random causes. Step 2: Formulate an analysis plan. There are two commonly used statistical tools, which is the t-test and the z-test. The t-test is usually used when the sample size is lesser than 30, and the z-test is used when the sample size is greater than or equal to 30. At this juncture, we will