A researcher is collecting individual data by asking visitors in a train station in a medium-sized town to fill in a questionnaire. It takes nearly 30 minutes to complete the survey questions. To encourage a higher participation rate, the researcher provides a small financial incentive that is enough to buy a sandwich. The researcher wants to use this sample to make predictions about the effect of using social media on health among the residents of the town. a. Explain the random sampling assumption, which is one of the Gauss-Markov assumptions for linear regressions.  b. Do you think this assumption is satisfied in the sample collected by the researcher? Explain your answer in no more than 85 words.

A coach is interested in how many slam dunks the average college freshman at his university can do. Ten volunteers from the senior class step forward. After observing their performance, the coach concluded that college seniors can do an average of 10 slam dunks in a row without missing. what is the sample? what is the population?

You randomly selected one sample of 40 citizens of your city to see if they wanted to increase taxes for education but you decided that you would do half younger people and half older people. Explain your answers. Is this random sampling?   Is this simple random sampling?

Imagine that you own a coffee shop in downtown Toronto. You think it's time to expand to a second location in a different part of the Greater Toronto Area. However, you need to make sure that the second location you have selected will be as popular with customers as your current location. You want to do a survey. You know you can't ask everyone, so you need to ask a sample. PART 1: What process should you follow to select your sample? choices are simple, systematic, stratified, and cluster sampling. PART 2: What is the best way to administer your survey to make sure you get enough responses to give you a good representative sample?

The floor exercise is a commonly shared event between the Women’s and Men’s Artistic Gymnastics programs. Let’s compare the floor exercise scores of the female gymnasts and male gymnasts. To do this, we will consider the 2007, 2011, and 2015 results as sample data. Part B: Apparatus Finals Let’s now look at the floor exercise scores in the Female Apparatus Finals and in the Male Apparatus Finals. Female Apparatus Finals Score Male Apparatus Finals Score 15.25 14.35 14.85 14.05 14.2 14.05 13.95 13.95 13.65 13.85 13.3 13.4 12.7 12.8 0 11.55 14.6 13.6 14.45 13.4 14.2 13.35 13.55 13.1 13.25 13.1 12.85 13.05 11.8 12.7 11.25 12.4 15 13 14.9 12.7 14.45 12.65 14.3 12.65 13.7 12.6 13.55 12.25 13.45 12.15 13.15 12.05 i. Find the sample mean and sample standard deviation for the floor exercise scores in the Female Apparatus Finals. ii. Find the sample mean and sample standard deviation for the floor exercise scores in the Male Apparatus…

At a recent home football game, the Falcons surveyed fans to name their favorite Falcons player. What type of data was collected?     Bivariate and Quantitative     Bivariate and Categorical     Univariate and Quantitative     Univariate and Categorical

Hi I need help with this answer. Thank you in advance.