On average, Americans have lived in 3 places by the time they are 18 years old. Is this average a different number for college students? The 63 randomly selected college students who answered the survey question had lived in an average of 3.06 places by the time they were 18 years old. The standard deviation for the survey group was 0.3. What can be concluded at the  αα = 0.10 level of significance? For this study, we should use  T test for a population mean or z test for a population proportion  The null and alternative hypotheses would be:       H0:                   H1:               The test statistic t or z    =  (please show your answer to 3 decimal places.) The p-value =      (Please show your answer to 4 decimal places.) The p-value is     αα Based on this, we should  <>    the null hypothesis. Thus, the final conclusion is that .

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On average, Americans have lived in 3 places by the time they are 18 years old. Is this average a different number for college students? The 63 randomly selected college students who answered the survey question had lived in an average of 3.06 places by the time they were 18 years old. The standard deviation for the survey group was 0.3. What can be concluded at the  αα = 0.10 level of significance?

  1. For this study, we should use  T test for a population mean or z test for a population proportion 
  2. The null and alternative hypotheses would be:     

 H0:                 

 H1:              

  1. The test statistic t or z    =  (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 that the populaton mean is significantly different from 3 at αα = 0.10, so there is statistically significant evidence to conclude that the population mean number of places that college students lived in by the time they were 18 years old is different from 3.
    • The data suggest that the population mean is not significantly different from 3 at αα = 0.10, so there is statistically insignificant evidence to conclude that the population mean number of places that college students lived in by the time they were 18 years old is different from 3.
    • The data suggest that the sample mean is not significantly different from 3 at αα = 0.10, so there is statistically insignificant evidence to conclude that the sample mean number of places that college students lived in by the time they were 18 years old is different from 3.06.
  6. Interpret the p-value in the context of the study.
    • If the population mean number of places that college students lived in by the time they were 18 years old is 3 and if you survey another 63 college students, then there would be a 11.74978814% chance that the sample mean for these 63 college students would either be less than 3 or greater than 3.06.
    • There is a 11.74978814% chance of a Type I error.
    • There is a 11.74978814% chance that the population mean number of places that college students lived in by the time they were 18 years old is not equal to 3.
    • If the population mean number of places that college students lived in by the time they were 18 years old is 3 and if you survey another 63 college students then there would be a 11.74978814% chance that the population mean would either be less than 3 or greater than 3.06.
  7. Interpret the level of significance in the context of the study.
    • There is a 10% chance that the population mean number of places that college students lived in by the time they were 18 years old is different from 3.
    • There is a 10% chance that none of this is real since you have been hooked up to virtual reality since you were born.
    • If the population mean number of places that college students lived in by the time they were 18 years old is 3 and if you survey another 63 college students, then there would be a 10% chance that we would end up falsely concluding that the population mean number of places that college students lived in by the time they were 18 years old is different from 3.
    • If the population mean number of places that college students lived in by the time they were 18 years old is different from 3 and if you survey another 63 college students, then there would be a 10% chance that we would end up falsely concluding that the population mean number of places that college students lived in by the time they were 18 years old is equal to 3.
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