Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

1) One can think of the mean as a balance point. How does this tell to the requirement of squaring the deviations in order to find out the variance?

2) What do you mean by random sampling and why is it so significant

3) Now assume the distribution of SAT scores is normal with a mean of µ = 500 and the standard deviation σ is unknown. If a mean SAT score is find outd from a sample of n = 100 students from this population, and standard deviation of those students’ scores is s = 125.

A. What range of values must hold the sample mean 95% of the time?

B. What range of values must hold the sample mean 99% of the time

4) The distribution of SAT scores is normal with a mean of µ = 500 and a standard deviation of σ = 100. If the mean SAT score is find outd from a sample of n = 100 students from this population…

A. What range of values must hold the sample mean 95% of the time?

B. What range of values must hold the sample mean 99% of the time?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M910320

Have any Question? 


Related Questions in Statistics and Probability

1 you wish to learn the proportion of mba students that are

1.) You wish to learn the proportion of MBA students that are female within 3%, and with 98% confidence. How large of a sample should you get? 2.) You wish to learn the average age of an MBA student within 2 years and wi ...

What is the estimate for the difference between

What is the estimate for the difference between ‘False-rejects' by Inspectors 2 and 5? 0.8 3.7 4.2 0.0 3.5

The following tables depict the preferences of three

The following tables depict the preferences of three universities regarding a set of applicants, and the preferences of the applicants regarding the universities. Every university also has a specified quota for the numbe ...

Imagine that you are interested in the effects of

Imagine that you are interested in the effects of background music on people's performance at work. Design an experiment in which you test the effects of classical music (played at various decibels) on employees job ...

Grear tire company has produced a new tire with an

Grear Tire Company has produced a new tire with an estimated mean lifetime mileage of 36,500 miles. Management also believes that the standard deviation is 5000 miles and that tire mileage is normally distributed. To pro ...

1 find the p valuep for the indicated hypothesis test with

1) Find the P value(P= ?) for the indicated hypothesis test with the given standardized test statistic z. Decide whether to reject Ho for the given level of significance.  Two tail test, z = 2.30, alpha = 0.01 2) Find th ...

Purpose of the studythis current research study is a

Purpose of the Study This current research study is a quantitative study. The aim of this research study is to investigate the levels of self-efficacy and to determine whether there is a relationship in quality of life a ...

Entertainment software association would like to test if

Entertainment Software Association would like to test if the average age of "gamers" (those that routinely play video games) is more than 30 years old. A random sample of 33 gamers was selected and their ages were record ...

1 explain the difference between rejecting and failing to

1. Explain the difference between rejecting and failing to reject the null hypothesis. In which case does a researcher conclude that the independent variable has an effect on the dependent variable? 2. Distinguish betwee ...

1 how can partial correlation help researchers explore

1. How can partial correlation help researchers explore possible causal relationships among correlated variables? 2. When is the Spearman rank-order correlation used? 3. What is a dichotomous variable? What correlations ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen