LSSMBB Practice Test practice questions, page 2 of 16, with answer review and explanations.
Question 6
In a statistical analysis, the beta risk (־²) is:
The probability of rejecting the null hypothesis when it is true
Always equal to 0.10
Driven by the cost of sampling
The probability of failing to reject the null hypothesis when it is false
Question 7
Sigma Saving and Loans processes loans and leases from around the world. The CEO wants to know if the current cycle time for processing is less than 9.5 days on average. To test the claim that the average cycle time is less than 9.5 days, use:
A 1-sample T-test
A 2 sample T-test
A One-way ANOVA
A Chi-square test of means
Question 8
Two different samples were pulled randomly from the same population. One sample is size n=10 and the other is size n=100. A two-sided confidence interval for the mean was calculated separately for each. How will the intervals compare?
The confidence interval for size n=10 will be smaller.
The confidence interval for size n=10 will be larger.
The confidence intervals will be the same for both n=10 and n=100.
There is not enough information given.
Question 9
The purpose of a screening experiment using DOE is to?
Optimize the response by determining the best levels for the input factors
Separating the ג€vital few from the trivial manyג€
Comparing various levels for one factor
Finding a set of levels for the inputs that produce a robust product
Question 10
Based on the DOE results illustrated in the image below, and considering the Hierarchy of Effects, what terms should be left in the model? Use an alpha of 0.10.