__________ 5. Suppose that P(A) = 0.2, P(B) = 0.2, and A is independent of B.
What is P(A U B)?
Which of the following statistics are always unitless?
Standard Error of the Regression
E) None of the above. All have units
Coefficient of Determination
A research and development engineer is preparing a report for the board of directors on the
expected life of a new mobile device they have produced.
At a 95% confidence level, the engineer
constructed the following interval for the average life of this new mobile device: 3.2 + 1 years.
If the engineer
would like to reduce the margin of error, which of the following would guarantee a smaller margin of error?
Option (B) will decrease the critical value, making the
margin of error smaller.