Computing the unknown distribution

Assignment Help Finance Basics

Reference no: EM131000596

A random sample of size n = 50 is taken from a large population with mean 15 and variance 4, but unknown distribution.

(i) What is the standard deviation σX¯ of the sample mean?

(ii) If the sample size were reduced by 50%, what will be the new standard deviation σX¯ of the sample mean?

(iii) To reduce the standard deviation to 50% of the value in (i), what sample size will be needed?

Reference no: EM131000596

Questions Cloud

Safety performance characterization program : The waiting time (in days) until the occurrence of a recordable safety incident in a certain company's manufacturing site is known to be an exponential random variable with unknown parameter β. As part of a safety performance characterization prog..

What is the relationship between vx and ax : In this picture the ball is moving around the origin in a circle and is affecting the graph. When it is moving the values change. what is the relationship between x and y and what is the relationship between x and vx.

Variance of a sample of size : The variance of a sample of size n = 20 drawn from a normal population with mean 100 and variance 10 was obtained as s2 = 9.5. (i) Determine the probability that S2 ≤ 10.

What is the range of the function : Write a piecewise-defined function that gives the cost C(n) for a museum visitor who is n years old. What is the range of the function

Computing the unknown distribution : A random sample of size n = 50 is taken from a large population with mean 15 and variance 4, but unknown distribution. (i) What is the standard deviation σX¯ of the sample mean?

Determine the mean and variance of the sample mean : A sample of size n is drawn from a large population with mean μ and variance σ2 but unknown distribution; (i) Determine the mean and variance of the sample mean when n = 10; μ = 50; σ2 = 20;

What is the very next set of marks on the two sticks match : Two measuring sticks are the exact same length. The scale units on the two sticks are different. Each stick is marked with equally spaced units. what is the very next set of marks on the two sticks that match exactly? What other marks match

Determine the lifo liquidation profit or loss : Disregarding income tax, determine the LIFO liquidation profit or loss, if any, for each of the three years.

What is the probability that each chooses a tile : A standard set of dominoes contains 28 tiles, with each tile having two sides of dots from 0 to 6. Of these tiles, 7 have the same number of dots on each side. what is the probability that each chooses a tile with the same number of dots on each si..

User Account

All Pages