Amy wants to estimate the average number of items per purchase at the express lane of a local grocery store. She has estimated the following probabilities based on a sample size of 50 customers. Determine the expected value, variance, and standard deviation of items per purchase. 
Definitions:
Initial Diagnosis
The preliminary identification of a disease or condition based on the assessment of symptoms and initial tests at the beginning of care.
CPT Code
A five-digit numerical code assigned to every task and service a healthcare practitioner may provide to a patient including medical, surgical, and diagnostic services.
Indented Description
A descriptive text formatted with indentations to emphasize hierarchy or structure.
Chief Complaint
The primary symptom or condition that a patient states as the reason for seeking medical care.
Q2: Two renewal energy alternatives are available for
Q5: A diltiazem IV drip is infusing at
Q6: Which of the following medication orders is
Q7: In research conducted by CPA Australia and
Q7: The gardener is adding fertilizer to water
Q10: Which information should be included on an
Q13: A nurse is preparing to administer Metformin
Q13: A set of official guidelines published by
Q24: Earnings management occurs when:<br>A) income and expenses
Q29: An IV fluid is infusing at 12