Mean and variance of x
A random variable X has a distribution with pdf p(x) = ((x^2)/16)*exp(-x/2) when x>0 and p(x) = 0 whenever x<0. What is the mean and variance of X?
Expected delivery within 24 Hours
A university found that the 30% of its students withdraw without completing the introductory statistics course. Suppose that 20 students registered for the course.
Provided: y^2 = -12x a. Find direction where the parabola opens? b. Write the value for p. c. Write equation for directrix. d. Write focal point(focus). e. Write endpoints of focal chord.
In a large class, the midterm had the average of 50 points with SD of 22. The final scores averaged out to 60 with SD of 20. The correlation between midterm as well as final scores was 0.60. The scatter diagram was football-shaped. Of the students
Determine the formula for exponential function V=h(t) which provides value of the item initially worth $5000 which loses half its value every 5 years.
Suppose exponential growth, determine the formula for number of cells p(t) in colony after t hours. How long will it take for colony to triple in size?
Estimate the value of k that makes f(x) a probability density function. (Hint:to find k, compare f(x) with the pdf of a normal distribution.)
Find P(Y > 5) using Poisson approximation. Find P(Y > 5) using Normal approximation.
You are given 10 multiple choice questions with 5 choices each, of which only one is correct. If you try and guess the correct answer for each question. Determine the probability of answering at least one question correctly?
1947342
Questions Asked
3,689
Active Tutors
1445224
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
What is the pathophysiology of osteoarthritis, and how does it relate to the patient's symptoms, such as pain and stiffness?
Review resources about nursing profession issues in the United States. Look specifically at the NLN and ANA website resources.
List and define the seven types of elder abuse that were identified by the National Center on Elder Abuse (NCEA).
Compare and contrast the operation of negative and positive feedback mechanisms in maintaining homeostasis.
Anemia is rarely a disease in itself, but almost always a manifestation of an acquired condition or genetic abnormality.
Describe how the Uncertainty in Illness Theory (UIT) and Reconceptualized Uncertainty in Illness Theory (RUIT)
What is the "big picture" of the immune system's role in maintaining homeostasis? What general principles are involved in the protection provided by the innate