You carried out an ANOVA on a preliminary sample of data. You then collected additional data from the same groups; the difference being that the sample sizes for each group were increased by a factor of 10, and the within-group variability has decreased substantially. Which of the following statements is NOT correct?

Related MCQs

• When conducting a one-way ANOVA, the ______________ the between-treatment variability is when compared to the within-treatment variability, the ______________ the FValue calculated from the data will tend to be.
• You conduct a hypothesis test and you observe values for the sample mean and sample standard deviation when n = 25 that do not lead to the rejection of Ho (null hypothesis). You calculate a p-value of 0.0667. What will happen to the p-value if you observe the same sample mean and standard deviation for a sample n>25?
• Factory A produces 100 pieces of wooden legs used in manufacturing tables in 1 hour. The factory in total works for 3 hours. The quality manager decided to check the quality of the output by measuring the length of the legs (in cms). He decides to collect three samples (one for each hour). The sample size for each sample is fixed at 5. The data collected is present in the following table: What is the mean and range of leg length in sample 1?
• Consider the first method of p bar estimation where each sample is of varying size. If the 3rd sample has p bar =.01, and the sample size of the 3rd sample is 10, what will be the upper control limit for the 3rd sample?
• While random variability in a system can be removed by ______________, non-random variability requires ______________.
• Consider two factors A and B, each with two levels. If there is no interaction between these two factors, the difference in the response variable between the two levels of factor A would be ______________ the difference between the two levels of factor B.
• You have carried out a Kruskal-Wallis test. There are significant differences between the three groups you are testing. How might you conduct your pair wise comparisons?
• If the Mean Square Error MSE of an ANOVA for six treatment groups is known, you can compute
• The cost of quality has been argued as being primarily driven by the workers. When items were produced that did not meet the customers' expectations, the workers were "found" to be at fault. Current thinking is that management has at least ______________ percent of the responsibility for the cost of quality.
• Assume the cholesterol levels in a certain population have mean μ = 200 and standard deviation σ = 24. The cholesterol levels for a random sample of n = 9 individuals are measured and the sample mean x-bar is determined. What is the z-score for a sample mean x = 180?