Determine if the following could be a probability distribution for a discrete random variable, x. if no, state why. x 20 30 40 50 p(x=x) 1.1 0.6 .2 .1 yes, the probabilities are all positive. no, while the probabilities are all positive, the p(x=20)=1.1. probabilities cannot exceed 1. no, the values of x are too far apart and the probabilities add up to a value greater than 1. yes, the probabilities add to 1 and they are all positive.

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

What is coefficient of the term of degree of degree 5 in the polynomial below