Practice Tests Of Significance (large Samples) (5) - Statistics - Mathematics III (PDE, Probability & Statistics)

Practice: Tests of Significance (Large Samples)

Lesson 5Statistics

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9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the formula for a single proportion test?
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Remember what each symbol represents!
Question 2.
How do you calculate a Z-score?
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It's all about the average!
3Question 3.
What is the purpose of a proportion test?
- To find the mean
- To test if sample proportions differ
- To calculate standard deviations
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Think about what you're checking.
4Question 4.
True or False: The formula for a single mean test requires standard deviation.
- True
- False
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Consider the components needed to calculate it.
Question 5.
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.
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Calculate p and Q carefully before substituting!
Question 6.
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.
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Identify your n values and standard deviations correctly!

5 more questions in this section. Enroll free to practise them all.