Question bank: Statistics: Sample Surveys

Access these and thousands of other questions, create assignments, projects, and lesson plans in minutes.

Question 1:

Very Hard

A cosmetics industry wants to evaluate consumer satisfaction regarding a new hair product. They conduct a satisfaction survey with a representative sample of consumers. The sample is stratified according to age groups, with 20% of the respondents belonging to the 18-25 age group, 30% to the 26-35 age group, 25% to the 36-45 age group, and 25% to the 46-60 age group. When analyzing the survey results, the company realizes that the average satisfaction of consumers is 4.5 on a scale of 1 to 5, where 1 is 'very dissatisfied' and 5 is 'very satisfied'. However, they suspect that satisfaction may be influenced by the age group distribution in the sample. To investigate this hypothesis, they conduct a statistical simulation where they keep the consumers' responses constant but change the age group distribution so that all strata have the same weight in the sample. After this simulation, the average satisfaction of consumers changes to 4.3. Considering the concept of sampling and stratified analysis, discuss how the change in age group distribution can affect the average satisfaction of consumers and evaluate the reliability of the initial survey results.

Statistics: Sample Surveys

Contextualized Question

Calculus Question

Question 2:

Hard

Considering a population of 1000 students in a school, a sample survey was conducted with 100 randomly chosen students. The results indicated that 70% of the students enjoy practicing physical activities after class. Based on this data, what is the estimate of how many students in this school enjoy practicing physical activities after class?

Statistics: Sample Surveys

Question 3:

Medium

João is a student who is conducting a research on soda consumption in his school. He interviewed 50 students of different ages to analyze the results. Which of the following measures are measures of central tendency that can be used to analyze the data collected by João?

Statistics: Sample Surveys

Question 4:

Medium

The 11th-grade class of XYZ school is planning a fundraising party and wants to know which type of food is the most popular among students. To find out, they decide to conduct a sample survey with students from the entire school, which has a total of 1,500 students. Based on this context, answer the following questions:

Statistics: Sample Surveys

Question 5:

Medium

Statistics: Sample Surveys

Contextualized Question

IARA TIP

Create lists and assessments from these and other 58 questions of Statistics: Sample Surveys

Didn't find what you were looking for? Try searching in a different way!

Grade

Select a grade

Subject

Select a subject

Why are Teachy's Question Banks the most complete available?

Complete platform:

With over 200,000 new questions from reputable sources, the question bank provides a wide range of resources to enhance your teaching materials.

Custom filters:

You can find specific questions based on subject and grade level, across various difficulty types, within hundreds of educational themes. This way, you can create personalized lists in just a few minutes.

Focus on students:

With Teachy's Question Bank, you ensure the success of your classes. We offer high-quality materials, carefully selected and aligned with the National Common Curricular Base, essential for any educational product.

Time for what matters:

The platform's easy access allows teachers to save time when planning their lessons. The materials can be accessed in just a few clicks, making pedagogical preparation straightforward and efficient.

Access anywhere:

Teachy provides the flexibility to access the question bank from anywhere, at any time. With this accessibility, teachers have more freedom to manage their time and resources, making their work more efficient.

See other related topics on Statistics: Sample Surveys

Didn't find what you were looking for?

Get full access to dozens of subjects and hundreds of materials on Teachy!