Determine probability that two or fewer will withdraw course

Reference no: EM13110513

The university has found that 20% of its students withdraw without completing introductory statistics course. Suppose that 20 students have registered for course this semester.

a) Determine the probability that two or fewer will withdraw?
b) Determine the probability that exactly four will withdraw?
c) Determine the probability that more than three will withdraw?
d) Determine the expected number of withdrawals?
e) Determine the variance and standard deviation.

Reference no: EM13110513

Questions Cloud

Explain this paradox : In cells, an enzyme catalyzes the reaction AB --> A + B. However, it was discovered as an enzyme that carries out the reverse reaction A + B --> AB. Explain this paradox.

Rate of return from the new factory : Employing the new factory would ultimately reduce average total cost and the present value of the gain from employing the new factory must be less or equal to $50 million.

Which of the would occur after administration of oubain : Total body sodium content determines extracellular fluid volume, and is regulated by the balance between sodium intake and sodium loss. Oubain is a poison that causes blockage of the Na+/K+ ATPase. Which of the following would occur after administ..

Mean selling time for farm associates : A statewide real estate sales agency, Farm Associates, specializes in selling farm property in the state of Nebraska. Its records indicate that the mean selling time of farm property is 90 days.

Determine probability that two or fewer will withdraw course : Suppose that 20 students have registered for course this semester. Determine the probability that two or fewer will withdraw? Determine the probability that exactly four will withdraw?

Is the federal funds rate currently too high or too low : Is the federal funds rate currently too high or too low, Suppose that a year has gone by, output is now just 1 percent above potential, and the inflation rate was 1.5 percent over the year. What federal funds rate should the Fed now set (assuming tha..

Characteristics of good research hypothesis : Discuss the characteristics of a good research hypothesis. What distinguishes a null hypothesis from a research hypothesis? How would you explain the difference between non-directional research and directional research hypothesis?

Develop a financial analysis of projects : You have been asked to develop a financial analysis of two projects and based on Net Present Value (NPV), Return on Investment (ROI), and Profitability Index (PI).

Applications of inference-hyothesis testing : In what areas of your business is it important to draw inference? Describe a time when drawing an inference may have hurt your business.

User Account

All Pages