Practice Approximation To Normal Distribution (18X.7) - Binomial Distribution

Practice: Approximation to Normal Distribution

Lesson 18X.7Binomial Distribution

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9 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the continuity correction factor when estimating a binomial distribution using a normal distribution?
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Think about how we adjust for the differences between discrete and continuous.
Question 2.
State the Z-score formula.
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What does the Z-score help us do?
3Question 3.
What is the Z-score formula for approximating a binomial distribution?
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Think about standard deviations.
4Question 4.
True or False: The normal approximation for the binomial distribution is only valid when p is close to 0 or 1.
- True
- False
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Recall when we said the approximation is effective.
Question 5.
A researcher finds that in a population of 1000 people, 40% are left-handed. If we sample 100 individuals, use the normal approximation to find the probability that at least 45 are left-handed.
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Start with np and npq calculations.
Question 6.
You conduct an experiment with 50 trials where the probability of success is 0.3. Use the normal approximation to find the probability of getting between 10 and 20 successes.
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Don't forget to adjust your limits!

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