15)   Spinning a coin, unlike tossing it, may not give heads and tails equal probabilities. I spun a penny 100 times and got 43 heads. We wish to find how significant is this evidence against equal probabilities. What is the sample proportion of heads?  Round to 3 places. Heads do not make up half of the sample. Is this sample evidence that the probabilities of heads and tails are different? Take p to be the probability of getting heads in a spin of a penny. Which hypotheses do we want to test? PICK ONE H0: p = 0.5 H0: p < 0.5 H0: p ≠ 0.5 H0: p = 0.5 H0: p = 0.5 H0: p ≠ 0.5 H0: p = 0.5 H0: p > 0.5 Compute the z test statistic. z =  Round to 2 places.

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Spinning a coin, unlike tossing it, may not give heads and tails equal probabilities. I spun a penny 100 times and got 43 heads. We wish to find how significant is this evidence against equal probabilities.

  1. What is the sample proportion of heads?

     Round to 3 places.

  2. Heads do not make up half of the sample. Is this sample evidence that the probabilities of heads and tails are different?

    Take p to be the probability of getting heads in a spin of a penny. Which hypotheses do we want to test?
    PICK ONE
    • H0p = 0.5
      H0p < 0.5
    • H0p ≠ 0.5
      H0p = 0.5
    • H0p = 0.5
      H0p ≠ 0.5
    • H0p = 0.5
      H0p > 0.5


  3. Compute the z test statistic.

    z =  Round to 2 places.
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