Which statement about Series and DataFrames is correct?

You need to convert a numeric column where some values are non-numeric strings (like “n/a”). The cleanest approach is:

A 48-year-old client in the intensive care unit (ICU) is receiving mechanical ventilation for acute respiratory failure. The interdisciplinary team anticipates that the client will require an artificial airway and ventilatory support for longer than 21 days. Which airway device should the nurse expect the provider to recommend?

When inspecting a DataFrame for the first time, which call is most useful for finding categories that appear with many spellings (“USA”, “U.S.A.”, “usa”)?

A column reads as object with values like “$1,234.50”. The cleanest two-step conversion to a numeric column is:

Why is df.iterrows() usually NOT the right way to operate on a DataFrame?

A column read as object contains values like “1,234” and “5,678”. To convert it to numbers, the cleanest approach is:

A patient is admitted to the intensive care unit in an Addisonian crisis. The patient is receiving IV hydrocortisone, isotonic fluids, and electrolyte replacement. After 12 hours of treatment, the nurse evaluates the patient’s response to therapy. Which assessment finding indicates to the nurse that the current therapies are effective?

A 60-year-old patient with Graves’ disease is scheduled for a thyroidectomy. During the assessment, the nurse notes tachycardia, heat intolerance, and exophthalmos. The provider prescribes medication to reduce thyroid hormone production before surgery.Which medication should the nurse anticipate administering?

A 34-year-old patient is admitted to the emergency department with diabetic ketoacidosis (DKA). Laboratory results reveal:Blood glucose: 842 mg/dLSerum potassium: 3.0 mEq/LThe nurse reviews the provider’s prescriptions. Which action should the nurse implement first?