1. The values analyze of LTime follow a normal
distribution
a. True
b. False
2. The 75% of values are below of:
a. 0.954
b. 1.204
c. 1.748
d. 1.220
3. A second sampling is made from LTime process. The value of
mean was
0.91, is correct to think that the average has changed
significantly?
a. True
b. False
1. In Anderson-darling test the hypothesis is
H0: The sample follows normal distribution
against
H1: H0 is not true
and we reject H0 if the p-value is less than (we choose it 0.05 in general)
Here p-value is 0.299 which is less than 0.05
Hence we failed to reject the null hypothesis and conclude that the sample follows normal distribution.option
Thus the answer is a. True.
2. Under third quartile (Q3) there lies 75% of the data. Here Q3 is 1.20412.
Therefore, the answer is b. 1.204.
3. The 95% confidence interval for mean is (0.92651, 1.04448). For the second sampling the mean is 0.91, which is outside of the confidence interval. Thus the mean has changed significantly.
Hence, the answer is a. True.
1. The values analyze of LTime follow a normal distribution a. True b. False 2. The 75% of values are below of: a. 0.95...
1. The values analyze of LTime follow a normal distribution a. True b. False 2. The 75% of values are below of: a. 0.954 b. 1.204 c. 1.748 d. 1.220 3. A second sampling is made from LTime process. The value of mean was 0.91, is correct to think that the average has changed significantly? a. True b. False Summary for LTime Anderson-Darling Normality Test A-Squared P-Value 0.43 0.299 Mean 0.98549 StDev 0.29727 0.08837 Variance Skew ness 0.260626 0.301601 100...
Please write it seriously and clearly 2) Construct 95% Confidence Intervals for the PERCENTAGE of Aluminum ductility and Steel ductility. TREAT THE PERCENTAGE DATA AS REGULAR DATA VALUES, AND NOT AS PROPORTIONS AS I SUGGESTED EARLIER. What can you say about the typical proportion ductility for Aluminum with respect to Steel? From a statistically significant perspective, can you conclude the Aluminum ductility is greater than Steel ductility based upon these CIs? Laboratory 1: Tensile Testing The tensile test can provide...