StudyXY
RegisterLog in

Statistical Methods and Confidence Interval Analysis: Assignments on Sampling, Estimation, and Hypothesis Testing

Assignments covering sampling methods, estimation techniques, and hypothesis testing.

Amelia Ward
Contributor
4.8
58
5 months ago
Preview (4 of 12 Pages)
100%
Purchase to unlock

Page 1

Statistical Methods and Confidence Interval Analysis: Assignments on Sampling, Estimation, and Hypothesis Testing - Page 1 preview image

Loading page ...

1Statistical Methods and Confidence Interval Analysis: Assignments onSampling, Estimation, and Hypothesis TestingAssignment-3-solution:(Chs.7and 8):Due byMidnight ofSunday,October14th, 2012:drop box3:Total70pointsTrue/False(1pointeach)Chapter 71.A sample size of1000is large enough to conclude that the sampling distributionof pis a normal distribution, when the estimate of the population proportion is.996.FALSEHere, n(1-p) =1000*0.004= 4 which is less than 10or even 5 (theliberal rulesuggested in the book)2.The standard deviation of all possible sample proportionsdecreasesas thesample sizedecreases.FALSEIt increases when n gets smaller.3.If the population is normally distributed then the sample meanisnormallydistributedfor anysample size.TRUE(Instructionson Ch 7, property 4)4.The reason sample variance has a divisor of n-1 rather than n is that it makes thestandard deviation an unbiased estimator of the population standard deviation.FALSESample variance is unbiased but sample standard deviation is not.5.The mean of the sampling distribution ofis always equal to the mean of thesampled population.TRUEChapter 86.First a confidence interval is constructed without using the finite populationcorrection factor. Then, for the same identical data, a confidence interval isconstructed using the finite population correction factor.The width of the intervalwith the finite population correction factor iswiderthan the confidence intervalwithout the finite population correction factor.

Page 2

Page 3

Page 4

Preview Mode

This document has 12 pages. Sign in to access the full document!

Study Now!

XY-Copilot AI
Unlimited Access
Secure Payment
Instant Access
24/7 Support
Document Chat

Document Details

Subject
Statistics

Related Documents

View all
Solved Assignments

The Statistics of Inheritance

Explore how inheritance follows predictable patterns using Punnett squares and probability. This helps explain how traits pass from parents to offspring, aiding our understanding of genetics, variation, and evolution in species.

Class Notes

Estimation and Hypothesis Testing

Learn about Two-Way ANOVA, a statistical method to analyze the effects of two independent variables on one dependent variable. Understand main and interaction effects, assumptions, and how it differs from one-way ANOVA in factorial designs.

Solved Assignments

Experimental Designs Week 4 Solution

Solutions and explanations for experimental design concepts from Week 4.

Solved Assignments

Inferential Statistics Week 2 Solution

Solutions to inferential statistics problems from Week 2 coursework.

Solved Assignments

Normal Distribution - Amount of Sleep

Application of normal distribution in analyzing sleep data.

Solved Assignments

Lab Activity 5 Sampling Distributions

Practical exercise on sampling distributions and statistical inference.

Solved Assignments

Correlation and Confidence Intervals

Explores correlation coefficients, confidence intervals, and statistical reliability.

Solved Assignments

Hypothesis Testing ๏ฟฝ Comparing Two Groups

Examines hypothesis testing methods for comparing two groups.

Solved Assignments

Probability and Statistics Assignment

An assignment covering probability theory and statistical analysis concepts.

Solved Assignments

Two-Sample Hypothesis Tests

This document provides solutions for two-sample hypothesis testing problems.