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Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for a single proportion test?
💡 Hint: Remember what each symbol represents!
Question 2
Easy
How do you calculate a Z-score?
💡 Hint: It's all about the average!
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the purpose of a proportion test?
- To find the mean
- To test if sample proportions differ
- To calculate standard deviations
💡 Hint: Think about what you're checking.
Question 2
True or False: The formula for a single mean test requires standard deviation.
- True
- False
💡 Hint: Consider the components needed to calculate it.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A marketing survey showed that out of 200 respondents, 140 preferred Product A over Product B. Test the hypothesis that more than 50% of the population prefers Product A, at a 0.05 significance level.
💡 Hint: Calculate p and Q carefully before substituting!
Question 2
Two different classes of students took the same test. Class A had a mean score of 70 with a standard deviation of 10 (n=30), and Class B had a mean score of 75 with a standard deviation of 15 (n=35). Conduct a hypothesis test to check if the difference between the means is significant.
💡 Hint: Identify your n values and standard deviations correctly!
Challenge and get performance evaluation