10% of all Americans suffer from sleep apnea. A researcher suspects that a lower percentage of those who live in the inner city have sleep apnea. Of the 366 people from the inner city surveyed, 26 of them suffered from sleep apnea. What can be concluded at the level of significance of αα = 0.10? For this study, we should use     The null and alternative hypotheses would be:      Ho:            (please enter a decimal)     H1:            (Please enter a decimal) The test statistic     =  (please show your answer to 3 decimal places.)

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10% of all Americans suffer from sleep apnea. A researcher suspects that a lower percentage of those who live in the inner city have sleep apnea. Of the 366 people from the inner city surveyed, 26 of them suffered from sleep apnea. What can be concluded at the level of significance of αα = 0.10?

  1. For this study, we should use    
  2. The null and alternative hypotheses would be:    
     Ho:            (please enter a decimal)   
     H1:            (Please enter a decimal)
  1. The test statistic     =  (please show your answer to 3 decimal places.)
  2. The p-value =  (Please show your answer to 4 decimal places.)
  3. The p-value is     αα
  4. Based on this, we should      the null hypothesis.
  5. Thus, the final conclusion is that ...
    • The data suggest the population proportion is not significantly smaller than 10% at αα = 0.10, so there is sufficient evidence to conclude that the population proportion of inner city residents who have sleep apnea is equal to 10%.
    • The data suggest the populaton proportion is significantly smaller than 10% at αα = 0.10, so there is sufficient evidence to conclude that the population proportion of inner city residents who have sleep apnea is smaller than 10%
    • The data suggest the population proportion is not significantly smaller than 10% at αα = 0.10, so there is not sufficient evidence to conclude that the population proportion of inner city residents who have sleep apnea is smaller than 10%.
  6. Interpret the p-value in the context of the study.
    • If the population proportion of inner city residents who have sleep apnea is 10% and if another 366 inner city residents are surveyed then there would be a 3.24% chance fewer than 7% of the 366 residents surveyed have sleep apnea.
    •  There is a 10% chance of a Type I error
    • There is a 3.24% chance that fewer than 10% of all inner city residents have sleep apnea.
    • If the sample proportion of inner city residents who have sleep apnea is 7% and if another 366 inner city residents are surveyed then there would be a 3.24% chance of concluding that fewer than 10% of inner city residents have sleep apnea.
  7. Interpret the level of significance in the context of the study.
    • If the population proportion of inner city residents who have sleep apnea is 10% and if another 366 inner city residents are surveyed then there would be a 10% chance that we would end up falsely concluding that the proportion of all inner city residents who have sleep apnea is smaller than 10%.
    • There is a 10% chance that the proportion of all inner city residents who have sleep apnea is smaller than 10%.
    • If the population proportion of inner city residents who have sleep apnea is smaller than 10% and if another 366 inner city residents are surveyed then there would be a 10% chance that we would end up falsely concluding that the proportion of all inner city residents who have sleep apnea is equal to 10%.
    • There is a 10% chance that aliens have secretly taken over the earth and have cleverly disguised themselves as the presidents of each of the countries on earth.
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