State the appropriate null and alternate hypotheses the hy
-State the appropriate null and alternate hypotheses.
_______________
_______________
-the hypothesis test is a _____________tailed test.
-compute the p value. Round the answer to four decimal places. p value = _______________
-Determine whether to reject H0
-State a conclusion
Solution
H0: mu1 = mu2 or mud =0
Ha: mu1 < mu2 Or mud<0
Left tailed test.
As p <0.10 reject null hypothesis.
conclusion: mu1<mu2 is statistically evident.
| Specimen | Wt ScaleI | Wt scale II | Difference d |
| 1 | 11.23 | 11.27 | -0.04 |
| 2 | 14.36 | 14.41 | -0.05 |
| 3 | 8.33 | 8.35 | -0.02 |
| 4 | 10.5 | 10.52 | -0.02 |
| 5 | 23.42 | 23.41 | 0.01 |
| 6 | 9.15 | 9.17 | -0.02 |
| 7 | 13.47 | 13.52 | -0.05 |
| 8 | 6.47 | 6.46 | 0.01 |
| 9 | 12.4 | 12.45 | -0.05 |
| 10 | 19.38 | 19.35 | 0.03 |
| Mean | -0.02 | ||
| Std dev | 0.028674418 | ||
| Std error | 0.009558139 | ||
| t | -2.092457497 | ||
| df | 9 | ||
| p value | 0.03298 |
