Question: Let the random variable X be the number of days that a patient stays in hospital after a surgical procedure. Assume that X = 1,

Let the random variable X be the number of days that a patient stays in hospital after a surgical procedure. Assume that X = 1, 2, 3 or 4, and that the probability mass function for X is

1x f(x)=P(X=x)= , x=1,2,3,4

Find the expected number of days that a patient will have to stay in hospital.

A) 2.5 B) 4

C) 1 D) 2 E) 3

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

For the frame and loading shown, draw the free-body diagram(s) needed to determine the components of all forces acting on member ABC. 4 ft 20 kips

Multiple choice question choose the right answer 2. Let the random variable X be the number of days that a patient stays in hospital after a surgical procedure. Assume that X = 1, 2, 3 or 4, and that...

3. Let the random variable X be the number of days that a patient needs to be in hospital. Suppose X has p.f. f (ac) = k(6 - 2) 2=1,2, 3, 4, 5. (a) Find the value of the multiplicative constant k, so...

1. Which of the following is the best example of a continuous random variable? The number of cups of coffee sold in the cafeteria during lunch. The number of coffee filters the cafeteria uses in one...

15) A delivery route must include stops at five cities. How many different routes are possible? A) 120 B) 5 C) 32 D) 3125 8) The number of ways a jury of 12 can be selected from a pool of 20 16) A...

1) Suppose that = 155 and = 20. Find the score 2.2 standard deviations above the mean. 20 5 19 9 19 0 18 5 2) Suppose that = 155 and = 20. Find the score 2.8 standard deviations below the mean. 8 9 9...

The table to the right lists probabilities for the corresponding numbers of girls in three births. What is the random variable, what are its possible values, and are its values numerical? Number of...

You don't have to give a thorough explanation. But something simple accompanied with the answer works fine. The assignment is due tonight I'd just like simple clarification. Most likely my teacher...

What is the addition to the who it is found 34 278 weer dit may be What is the standard deviation for the values of the random van? Wat the The standard deviation is (Round in three decimal places...

In analyzing patient admissions at a hospital, it is found that 31 comma 463 patients were admitted in a recent year. Let the random variable x represent the number of patient admissions in one day,...

Refer to the following contingency table for question 1a and 1b Pedestrian intoxicated Pedestrian not intoxicated Driver intoxicated 59 79 Driver not intoxicated 266 581 1. The table above summarizes...

Radford is a small company that manufactures automobile bearings. Managers at the company must make decisions on the kind and the cost of equipment to buy. Which area of finance is this?

The following data give the letter grades of 20 students enrolled in a statistics course (a) Construct a bar graph. (b) Construct a pie chart. D _ F

The transfer function corresponding to the Bode plot in Figure 8.56 is: 100(s+10) (s+5000) a. G(s) = s(s + 5)(s+6) b. G(s) = = 100 c. G(s) = d. G(s) = 100 (s + 1)(s +20) (s+1)(s +50) (s + 200)...

Brio Company produces a part that is used in the manufacture of one of its products. The unit manufacturing costs of this part, assuming a production level of 6,000 units, are as follows: Direct...

Make a presentation on Enterprise Exposure to Risk Assessment Process

3. What is case briefing? Provide a case brief of the following case laws: United States v Leon 468 U.S. 897 (1984) Acacia Mutual v America General Life 111 N.M. 106, 802 P.2d 11 (1990

1. What are the few basic steps to legal research?

Your IT dept discovers malware in one of the servers that deals with inventory. How do you deal with it ? Shut down everything in case it has spread? Shut down that server? Fix it without shutting it...

Keep your head straight on your shoulders

Be straight in the back without blowing out the chest

Wear as little as possible