Back to Understand statistics as a process for inference — Problem 2 · Task Set 12

Exercises: Understand Statistics as a Process for Making Inferences

Work through each section in order. For each scenario, read carefully and use the correct vocabulary (population, parameter, sample, statistic) and notation. Explain your reasoning where a written response is asked for.

Grade 10·21 problems·~40 min·Common Core Math - HS Statistics and Probability·group·hss-ic-a-1

Work through problems with immediate feedback

Fluency Practice

A researcher poses the question "What proportion of all town voters support the new park?", randomly polls 400 voters, finds 220 in favor, and concludes the town proportion is "around 0.55." In the four-step inference process, computing $220/400 = 0.55$ corresponds to which step?

Step 1: pose a question about a parameter

Step 2: draw a random sample

Step 3: compute a statistic

Step 4: infer about the parameter