1,185 prompts matching "Quiz: Why a conditional with a false antecedent counts as true"
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Worked Example: Finding a particular term of a binomial expansion
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Practice: Using a binomial expansion to approximate a number
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Explain Back: The binomial probability formula
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Practice: The probability of exactly r events in a Poisson distribution
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Worked Example: The probability of no events at all in a Poisson distribution
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Explain Back: Finding n and p from a given mean and variance
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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Explain Back: Converting a value to a z-score
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Worked Example: Finding a value from a given probability by working backwards
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Practice: Using the normal tables when the z-score is negative
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Worked Example: The continuity correction when approximating a discrete distribution
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Practice: The components of a vector given its magnitude and direction
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Worked Example: The distance between two points in three dimensions
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Practice: The magnitude of the sum of two vectors
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Worked Example: Finding the unit vector in the direction of a given vector
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Practice: A vector of stated magnitude in a given direction
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Worked Example: The position vector of the midpoint of AB
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Worked Example: The triangle law of vector addition
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Explain Back: The dot product of two perpendicular vectors
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Worked Example: Testing two vectors for perpendicularity
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