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Faith T.
Tutor for 4 years
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Basic Math
TutorMe
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.

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

Biology
TutorMe
Question:

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

Faith T.
Answer:

Alleles

Anatomy
TutorMe
Question:

What is the main function of the sternum?

Faith T.
Answer:

To protect the vital organs within the lungs.

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