CramX
RegisterLog in

Statistics/Probability H/W Solution Correct Answers

Homework answers for a statistics/probability course.

Claire Mitchell
Contributor
4.8
51
7 months ago
Preview (6 of 17 Pages)
100%
Purchase to unlock

Page 1

Statistics/Probability H/W Solution Correct Answers - Page 1 preview image

Loading page ...

Statistics/Probability H/WSolution Correct AnswersInstructions: Please show all work, this includes formulas used and writing down whatyou entered into the calculator in case you use the calculator to solve problems.1.The mean output of an amplifier is 181 watts.It has σ = 10 watts.If 98 amplifiersare sampled, what is the probability that the average output is between 178.9 and183.1 watts?(6 points)2.Suppose that 56% of students at a university are in the College of Business.Asample of 803 students is taken.What is the probability that the sample proportionof students in the College of Business is greater than 53%? (6 points)3.Given a confidence interval for a population mean of 11.78 < μ < 21.96, determinethe original point estimate for the interval and the margin of error.(6 points)4.A chemist would like a margin of error for his experiment on chemical viscosity tobe no more than 0.6217.How large a sample must he use ifσ= 0.858 and hewould like to have a 95% confidence level?(6 points)5.When must a critical t value be used rather than a critical z value? (4 points)6.The average GPA for a sample of 100 high school students considering attending alocal university is 3.21 with s = 0.17.Determine a 99% confidence interval for thepopulation mean.Interpret the interval. (8 points)7.The following is a random sample of the annual salaries of high school counselors inthe US.Assuming that the distribution of salaries is approximately normal, constructa 90% confidence interval for the mean salary of high school counselors across theUS.Interpret the interval.(8 points)$51,050

Page 2

Page 3

Page 4

Page 5

Page 6

Preview Mode

This document has 17 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

Two-Sample Hypothesis Tests

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

Solved Assignments

Simple Regression Analysis

Study on regression techniques and their applications in data analysis.

Solved Assignments

SPSS Cumulative Assessment Instructions

Instructions for conducting cumulative assessments using SPSS software.

Solved Assignments

Inferential Statistics Week 2 Solution

Solutions to inferential statistics problems from Week 2 coursework.

Solved Assignments

Hypothesis Testing � 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

Applying Hypothesis Tests Discussion #8

Discussion-based solved assignment on applying various hypothesis testing methods in research.

Solved Assignments

Research Process and Terminology

Covers key concepts and methodologies in research processes.