Homework Help is Here – Start Your Trial Now!
Math
Statistics
Research on stock market data indicated that over the course of a year, 50% of stokes go up. A random sample of 400 stokes is going to be chosen at the beginning of next year. Let ?̂be the proportion of the stokes in the sample that go up over the course of a year. [? + ? + ? = ? ??????] a) Find the mean of sample proportions. b) Find the standard deviation of sample proportions. c) Find the probability that fewer than 46% of the stokes in the sample go up over the course of the year.

Research on stock market data indicated that over the course of a year, 50% of stokes go up. A random sample of 400 stokes is going to be chosen at the beginning of next year. Let ?̂be the proportion of the stokes in the sample that go up over the course of a year. [? + ? + ? = ? ??????] a) Find the mean of sample proportions. b) Find the standard deviation of sample proportions. c) Find the probability that fewer than 46% of the stokes in the sample go up over the course of the year.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

Research on stock market data indicated that over the course of a year, 50% of stokes go up. A random sample of 400 stokes is going to be chosen at the beginning of next year. Let ?̂be the proportion of the stokes in the sample that go up over the course of a year. [? + ? + ? = ? ??????] a) Find the mean of sample proportions. b) Find the standard deviation of sample proportions. c) Find the probability that fewer than 46% of the stokes in the sample go up over the course of the year.

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS