LSSBB Practice Test

LSSBB Practice Test practice questions, page 10 of 12, with answer review and explanations.

Question 46

Which statement is NOT correct about the Fitted Line Plot shown here?

  1. The independent variable is the reactant
  2. If the reactant was 6 units, with 95 % confidence we would expect a minimum yield of 100 units
  3. With at least 95% confidence, we can expect less than 10 units of Yield when the reactant is at a value of 1
  4. A reactant value between 2 and 4 units yields around 20 to 40
  5. When the reactant increases, the expected yield would increase

Question 47

When doing Hypothesis Testing on Non-normal data Belts will use a ________________ to compare more than two sample proportions to each other.

  1. Z score Table
  2. Sakami Table
  3. Mean-to-Mode Analysis
  4. Contingency Table

Question 48

It would be more likely than not for a Belt conducting a Regression Analysis to find that the _______________________.

  1. r2 value is smaller than the absolute value of r
  2. Correlation Coefficient equals r2
  3. Coefficient of Determination is less than r2
  4. Correlation Coefficient equals r divided by 2

Question 49

When a Belt properly analyzes the results of an experiment he must examine the Residuals in expectation of finding all of the following except _________.

  1. Some Residuals higher than others
  2. Some Residuals lower than others
  3. All Residuals within 2 Standard Deviations of the Mean
  4. Residuals will represent a Linear Regression

Question 50

Which statement(s) are correct about the Regression shown here? (Note: There are 2 correct answers).

  1. The dependent variable is the outside temperature
  2. The relationship between outside temperature and number of customers per hour is a Linear Regression
  3. The dashed lines indicate with 95% confidence where all of the process data should fall between
  4. The dashed lines indicate with 95% confidence the estimate for the Quadratic Regression Line
  5. The predicted number of customers per hour is close to 5 if the outside temperature is 10 deg C