Answer : X = 3.3
If we multiply the number of person months with 3.3, then we can find close approximation of the cost of a project.
>3. If we multiply the number of person months bythis variable we can find a very...
Question 2E Page >of 3 What Is the probability that the Aurora Borealis can be seen every day of this week a (b) What is the probability that the Aurora Borealis can be seen at least one day in this week? (c) What is the probability that the Aurora Borealis can be seen less than two days this week? (d) Find the mean, variance, and standard deviation for the number of days that the Aurora Borealis can be seen during...
3:13 Calculator Close dx = 22 X VX +4 We don't know how to calculate the entered A math problem... + fj<> abc + + ( ) 7 8 9 3. VO. 4 5 6 0²8.123 . % 0 . =
(c) Find the variance of Y. 3. A random variable Y has the density function f(y) = Ky exp(-y/4), for osy<0. Then, [3+3+4=10 points) (a) Find the constant K. (b) Find the variance of Y. (C) Evaluate P(x > ).
Can you explain why we multiply this by 4 times? You dont have the answer the questions in the picture. I just need to know why it's 4. 10.95 Suppose that we have a random sample of four observations from the density function e-y/0, y > 0, f(y(0) = { elsewhere. Find the rejection region for the most powerful test of Ho : 0 = 0o against H:0 = 0a, assuming that a > 00. [Hint: Make use of the...
If a random variable X has the gamma distribution with ?= 2 and ?= 1, find P(1.8 <X < 2.6). P( 1.8 < X < 2.6)= | | (Round to four decimal places as needed.)
(1) Suppose the pdf of a random variable X is 0, otherwise. (a) Find P(2 < X < 3). (b) Find P(X < 1). (e) Find t such that P(X <t) = (d) After the value of X has been observed, let y be the integer closest to X. Find the PMF of the random variable y U (2) Suppose for constants n E R and c > 0, we have the function cr" ifa > 1 0, otherwise (a)...
x(3-x) 0<x<3 Let X be a continuous random variable with density function What is the mode of X. Answer in simplied fraction form
We know that, in the population, the average memory span (number of items a person can recall) is 7, with a standard deviation of 2. We want to know if the herb gingko biloba can really enhance a person’s memory. We get a sample of 25 students and have them take the herb for one month and then test their memory span. What null hypothesis would we test? What is the alternative hypothesis? We know that, in the population, the...
3. A mor norrean fco flo fío f' f'>0. typical function, derivative of functia alternates For zeros of a sign of the slope of the the te B). Use the linear approximation to show that it fal=0 & f'lad>o the for xxa but very close to a - fx) < o exca, x-a small & flx) >0 (xad, x-a small C). Conclude that it is impossible for a function f(x) with nice derivatives to have two cobsecutive zeros x, <...
X with density fcx)3/56 ir 2<<4 5. Consider a continuous random variable X with density f(x)- otherwise a. Find P(1 <X<3) b. Find ECX)