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COIN TOSSES In a large class of introductory Statistics students, the professor has each student toss a...

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Statistics

COINTOSSES In a large class of introductory Statisticsstudents, the professor has each student toss a coin 16 times andcalculate the proportion of his or her tosses that were heads. Thestudents then report their results, and the professor plots ahistogram of these several proportions.

  1. What shape would youexpect this histogram to be? Why?

  2. Where do you expectthe histogram to be centred?

  3. How much variabilitywould you expect among these proportions?

  4. Explain why a Normalmodel should not be used here.

The answer is

1, symmetric

2, 0.5

3, 0.125

4. np=8<10

Please explain why the third question has answer 0.125. how didyou get it?

Answer & Explanation Solved by verified expert
3.8 Ratings (670 Votes)
125 is given as the answer because here standard deviation ofsample proportion has been used as a measure of variability Let meexplain it properlyHere the coin is assumed to be an    See Answer
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