On average, Americans have lived in 2 places by the time they are 18 years old. Is this average a different number for college students? The 46 randomly selected college students who answered the survey question had lived in an average of 1.73 places by the time they were 18 years old. The standard deviation for the survey group was 0.8. What can be concluded at the αα = 0.05 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.)
On average, Americans have lived in 2 places by the time they are 18 years old. Is this average a different number for college students? The 46 randomly selected college students who answered the survey question had lived in an average of 1.73 places by the time they were 18 years old. The standard deviation for the survey group was 0.8. What can be concluded at the αα = 0.05 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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On average, Americans have lived in 2 places by the time they are 18 years old. Is this average a different number for college students? The 46 randomly selected college students who answered the survey question had lived in an average of 1.73 places by the time they were 18 years old. The standard deviation for the survey group was 0.8. What can be concluded at the αα = 0.05 level of significance?
- For this study, we should use
- The null and alternative hypotheses would be:
H0:H0:
H1:H1:
- The test statistic = (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 ...
- The data suggest that the populaton mean is significantly different from 2 at αα = 0.05, 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 2.
- The data suggest that the sample mean is not significantly different from 2 at αα = 0.05, 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 1.73.
- The data suggest that the population mean is not significantly different from 2 at αα = 0.05, 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 2.
- Interpret the p-value in the context of the study.
- There is a 2.68229742% chance of a Type I error.
- If the population mean number of places that college students lived in by the time they were 18 years old is 2 and if you survey another 46 college students then there would be a 2.68229742% chance that the population mean would either be less than 1.73 or greater than 2.27.
- There is a 2.68229742% 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 2.
- If the population mean number of places that college students lived in by the time they were 18 years old is 2 and if you survey another 46 college students, then there would be a 2.68229742% chance that the sample mean for these 46 college students would either be less than 1.73 or greater than 2.27.
- Interpret the level of significance in the context of the study.
- There is a 5% chance that the population mean number of places that college students lived in by the time they were 18 years old is different from 2.
- If the population mean number of places that college students lived in by the time they were 18 years old is different from 2 and if you survey another 46 college students, then there would be a 5% 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 2.
- There is a 5% 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 2 and if you survey another 46 college students, then there would be a 5% 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 2.
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