Distribution selection for modeling

A question is this type if and only if it asks to suggest or evaluate whether specific probability distributions are suitable for modeling given real-world scenarios.

2 questions · Easy -1.2

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Edexcel S1 Q2
8 marks Easy -1.2
2.
  1. Explain briefly what is meant by a statistical model.
  2. State, with a reason, whether or not the normal distribution might be suitable for modelling each of the following:
    1. The number of children in a family;
    2. The time taken for a particular employee to cycle to work each day using the same route;
    3. The quarterly electricity bills for a particular house.
Edexcel S2 Q2
9 marks Easy -1.2
2. Suggest, with reasons, suitable distributions for modelling each of the following:
  1. the number of times the letter J occurs on each page of a magazine,
  2. the length of string left over after cutting as many 3 metre long pieces as possible from partly used balls of string,
  3. the number of heads obtained when spinning a coin 15 times.