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The probability of obtaining heads on a biased coin is 0.4. The coin is tossed 600 times. Write down the mean number of heads and the standard deviation of the number of heads.

The distribution of heads on a biased coin will be binomial - there are only two possible outcomes for a given throw (disregarding the coin standing upright after a toss). Thus X ~ B(600, 0.4) - where X i...

AL
Answered by Aleksander L. Maths tutor
16398 Views

With reference to a poverty trap (poverty cycle), explain how “investing in human development is crucial to ... reducing poverty”

A poverty trap is a vicious cycle that can be observed in poorer societies or poorer members of rich societies. It is caused by lack of capital - this includes natural capital, human capital, and actual c...

AL
5964 Views

Solve x^2 – 6x – 8 = 0 Write your answer in the form a ± √ b where a and b are integers. (Higher tier paper)

To solve this equation we cant use the PSF method, as nothing multiplies to -8 and adds to -6. (Also in the question it says the answer will be in a±b which is normally what you get when you can't factori...

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Answered by Alex D. Maths tutor
19048 Views

Describe the process of protein synthesis.

A copy of the gene to be coded in DNA is made from messenger RNA (mRNA). mRNA travels out of the nucleus and attaches to a ribosome. The ribosome joins amino acids together in the order determined by mRNA...

AT
Answered by Arjun T. Biology tutor
7396 Views

What is meant by Pathetic Fallacy?

Pathetic Fallacy is where the outside world relfects the character's thoughts or feelings. i.e. A storm raged on beyond the vale. This could signify anger or even anxiety.

ER
5419 Views

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