The average salary for American college graduates is $45,900. You suspect that the average is more for graduates from your college. The 46 randomly selected graduates from your college had an average salary of $47,317 and a standard deviation of $7,160. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0: p or μ Select an answer > = ≠ < ___ H1: p or μ Select an answer > = < ≠ ____ The test statistic t or z = __(please show your answer to 3 decimal places.)
The average salary for American college graduates is $45,900. You suspect that the average is more for graduates from your college. The 46 randomly selected graduates from your college had an average salary of $47,317 and a standard deviation of $7,160. What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0: p or μ Select an answer > = ≠ < ___ H1: p or μ Select an answer > = < ≠ ____ The test statistic t or z = __(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
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The average salary for American college graduates is $45,900. You suspect that the average is more for graduates from your college. The 46 randomly selected graduates from your college had an average salary of $47,317 and a standard deviation of $7,160. What can be concluded at the αα = 0.05 level of significance?
- For this study, we should use Select an answer z-test for a population proportion t-test for a population mean
- The null and alternative hypotheses would be:
H0: p or μ Select an answer > = ≠ < ___
H1: p or μ Select an answer > = < ≠ ____
- 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 ≤ or > a
- Based on this, we should Select an answer fail to reject reject accept the null hypothesis.a
- Thus, the final conclusion is that ...
- The data suggest that the population mean is not significantly greater than 45,900 at αα = 0.05, so there is statistically insignificant evidence to conclude that the population mean salary for graduates from your college is greater than 45,900.
- The data suggest that the populaton mean is significantly greater than 45,900 at αα = 0.05, so there is statistically significant evidence to conclude that the population mean salary for graduates from your college is greater than 45,900.
- The data suggest that the sample mean is not significantly greater than 45,900 at αα = 0.05, so there is statistically insignificant evidence to conclude that the sample mean salary for graduates from your college is greater than 47,317.
- Interpret the p-value in the context of the study.
- There is a 9.31685111% chance of a Type I error.
- There is a 9.31685111% chance that the population mean salary for graduates from your college is greater than $45,900 .
- If the population mean salary for graduates from your college is $45,900 and if another 46 graduates from your college are surveyed then there would be a 9.31685111% chance that the sample mean for these 46 graduates from your college surveyed would be greater than $47,317.
- If the population mean salary for graduates from your college is $45,900 and if another 46 graduates from your college are surveyed then there would be a 9.31685111% chance that the population mean salary for graduates from your college would be greater than $45,900.
- Interpret the level of significance in the context of the study.
- If the population population mean salary for graduates from your college is greater than $45,900 and if another 46 graduates from your college are surveyed then there would be a 5% chance that we would end up falsely concluding that the population mean salary for graduates from your college is equal to $45,900.
- If the population mean salary for graduates from your college is $45,900 and if another 46 graduates from your college are surveyed then there would be a 5% chance that we would end up falsely concluding that the population mean salary for graduates from your college is greater than $45,900.
- There is a 5% chance that your won't graduate, so what's the point?
- There is a 5% chance that the population mean salary for graduates from your college is greater than $45,900.
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