Let X∼N(5,4)X \sim N(5, 4) and Y∼N(3,9)Y \sim N(3, 9) where…

Let X∼N(5,4)X \sim N(5, 4) and Y∼N(3,9)Y \sim N(3, 9) where XX and YY are independent random variables. Calculate the expectation and variance of the linear combination Z=3X−2YZ = 3X – 2Y.  Note: X∼N(5,4)X \sim N(5, 4) – this notation is saying that X is distributed as normal with mean 5 and variance 4. Same notation applies to Y.

The nurse just finished ambulating a client. Compare the adm…

The nurse just finished ambulating a client. Compare the admission vital signs to the current vital signs after ambulation.  Indicate whether the change in vital signs is “concerning” or “not concerning”. For your answer, check only the boxes that would be “concerning”   Client Chart   Admission Vital Signs Current Vital Signs Temperature 97.8˚ oral 98.2˚ oral Pulse 68    pm 78    pm Respirations 16 20 Blood pressure 118/68 148/72 O2 saturation 96% 92%

When assessing a client’s vital signs, the nurse should expl…

When assessing a client’s vital signs, the nurse should explain each of their next actions before assessing the client’s temperature, pulse, and blood pressure. However, the nurse has not announced her intention to assess the client’s respiratory rate before measuring it. Which of the following is a plausible rationale for the nurse’s decision?