The manufacturer claims that your new car gets 35 mpg on the highway. You suspect that the mpg is a different number for your car. The 66 trips on the highway that you took averaged 40.4 mpg and the standard deviation for these 66 trips was 13.7 mpg. What can be concluded at the  αα = 0.01 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 sample mean is not significantly different from 35 at αα = 0.01, so there is statistically insignificant evidence to conclude that the sample mean mpg for your car on the highway is different from 40.4. The data suggest that the populaton mean is significantly different from 35 at αα = 0.01, so there is statistically significant evidence to conclude that the population mean mpg for your car on the highway is different from 35. The data suggest that the population mean is not significantly different from 35 at αα = 0.01, so there is statistically insignificant evidence to conclude that the population mean mpg for your car on the highway is different from 35. Interpret the p-value in the context of the study. There is a 0.21124210000001% chance of a Type I error. If the population mean mpg for your car on the highway is 35 and if you take another 66 trips on the highway, then there would be a 0.21124210000001% chance that the sample mean for these 66 highway trips would either be less than 30 or greater than 40.4. There is a 0.21124210000001% chance that the population mean mpg for your car on the highway is not equal to 35. If the population mean mpg for your car on the highway is 35 and if you take another 66 trips on the highway then there would be a 0.21124210000001% chance that the population mean would either be less than 30 or greater than 40.4. Interpret the level of significance in the context of the study. There is a 1% chance that you own an electric powered car, so none of this matters to you anyway. If the population population mean mpg for your car on the highway is different from 35 and if you take another 66 trips on the highway, then there would be a 1% chance that we would end up falsely concluding that the population mean mpg for your car on the highway is equal to 35. There is a 1% chance that the population mean mpg for your car on the highway is different from 35. If the population mean mpg for your car on the highway is 35 and if you take another 66 trips on the highway, then there would be a 1% chance that we would end up falsely concluding that the population mean mpg for your car on the highway is different from 35.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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The manufacturer claims that your new car gets 35 mpg on the highway. You suspect that the mpg is a different number for your car. The 66 trips on the highway that you took averaged 40.4 mpg and the standard deviation for these 66 trips was 13.7 mpg. What can be concluded at the  αα = 0.01 level of significance?

  1. For this study, we should use    
  2. The null and alternative hypotheses would be:     

 H0:H0:                 

 H1:H1:              

  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 that the sample mean is not significantly different from 35 at αα = 0.01, so there is statistically insignificant evidence to conclude that the sample mean mpg for your car on the highway is different from 40.4.
    • The data suggest that the populaton mean is significantly different from 35 at αα = 0.01, so there is statistically significant evidence to conclude that the population mean mpg for your car on the highway is different from 35.
    • The data suggest that the population mean is not significantly different from 35 at αα = 0.01, so there is statistically insignificant evidence to conclude that the population mean mpg for your car on the highway is different from 35.
  6. Interpret the p-value in the context of the study.
    • There is a 0.21124210000001% chance of a Type I error.
    • If the population mean mpg for your car on the highway is 35 and if you take another 66 trips on the highway, then there would be a 0.21124210000001% chance that the sample mean for these 66 highway trips would either be less than 30 or greater than 40.4.
    • There is a 0.21124210000001% chance that the population mean mpg for your car on the highway is not equal to 35.
    • If the population mean mpg for your car on the highway is 35 and if you take another 66 trips on the highway then there would be a 0.21124210000001% chance that the population mean would either be less than 30 or greater than 40.4.
    • Interpret the level of significance in the context of the study.
      • There is a 1% chance that you own an electric powered car, so none of this matters to you anyway.
      • If the population population mean mpg for your car on the highway is different from 35 and if you take another 66 trips on the highway, then there would be a 1% chance that we would end up falsely concluding that the population mean mpg for your car on the highway is equal to 35.
      • There is a 1% chance that the population mean mpg for your car on the highway is different from 35.
      • If the population mean mpg for your car on the highway is 35 and if you take another 66 trips on the highway, then there would be a 1% chance that we would end up falsely concluding that the population mean mpg for your car on the highway is different from 35.
    •  
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