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Tutor profile: Faith T.

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Faith T.
Tutor for 4 years
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Questions

Subject: Basic Math

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Question:

A fair coin is tossed 100 times. Use the Normal approximation to the Binomial distribution to calculate the probability that the number of Tails is between 42 and 57 inclusive.

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Faith T.
Answer:

n=100, p=1/2, q=1/2 Therefore, - The mean number of Tails = np = 100 × ½ = 50 - The standard deviation = √(npq) = √(100 × ½ × ½) = √(25) = 5 Approximate by the Normal Random variable X with μ = 50 and σ = 5 Therefore P(42 ≤ No. of tails ≤ 57) ≈ P(41.5 < X < 57.5) =04332+04554=08886

Subject: Biology

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Question:

What is different forms of a same gene referred to as?

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Faith T.
Answer:

Alleles

Subject: Anatomy

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Question:

What is the main function of the sternum?

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Faith T.
Answer:

To protect the vital organs within the lungs.

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