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statistics, are my calculations correct?

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classify the following as discrete or continuous random variables:

a) the time it takes to run a marathon- i think that it is discrete

b) the number of fractions between one and two- i think that it is discrete?

c) a pair of dice is rolled and the sum to appear on the dice is recorded- i think that it is discrete

d) the length of a broad jump- i think that it is continuous.

*am i correct and if not what would i need to change? please clarify with specifics. thank you.
mary hornbeck

  • statistics, are my calculations correct? -

    a) If length is continuous, wouldn't time also be continuous?

    b) The fractions can get smaller and smaller (e.g., 1 and 1*10^-9)

    Otherwise, I think you are correct.

    For your own safety, it is better not to use your whole name.

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