Homework Help is Here – Start Your Trial Now!
Math
Statistics
Questions A, B, and C Please

Questions A, B, and C Please

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
See similar textbooks
icon
Related questions
Topic Video
Question

Questions A, B, and C Please

Generally speaking, would you say that most people can be trusted? A random sample of n, = 246 people in Chicago ages 18-25 showed that r, = 48 said yes. Another random sample of n, = 275 people in Chicago ages 35-45 showed that r, = 75 said yes. Does this indicate that the population proportion of trusting people in Chicago is higher for the older group? Use a = 0.05. A USE SALT (a) What is the level of significance? State the null and alternate hypotheses. H: P, = Pi H :P, > P2 O H,: P, = P,i H, P, +P2 O H! P, < Pi H:P, = P2 (b) What sampling distribution will you use? What assumptions are you making? O The Student's t. We assume the population distributions are approximately normal. O The Student's t. The number of trials is sufficiently large. • The standard normal. The number of trials is sufficiently large. O The standard normal. We assume the population distributions are approximately normal. What is the value of the sample test statistic? (Test the difference P, - P,. Do not use rounded values. Round your final answer to two decimal places.) (c) Find (or estimate) the P-value. (Round your answer to four decimal places.)
Transcribed Image Text:Generally speaking, would you say that most people can be trusted? A random sample of n, = 246 people in Chicago ages 18-25 showed that r, = 48 said yes. Another random sample of n, = 275 people in Chicago ages 35-45 showed that r, = 75 said yes. Does this indicate that the population proportion of trusting people in Chicago is higher for the older group? Use a = 0.05. A USE SALT (a) What is the level of significance? State the null and alternate hypotheses. H: P, = Pi H :P, > P2 O H,: P, = P,i H, P, +P2 O H! P, < Pi H:P, = P2 (b) What sampling distribution will you use? What assumptions are you making? O The Student's t. We assume the population distributions are approximately normal. O The Student's t. The number of trials is sufficiently large. • The standard normal. The number of trials is sufficiently large. O The standard normal. We assume the population distributions are approximately normal. What is the value of the sample test statistic? (Test the difference P, - P,. Do not use rounded values. Round your final answer to two decimal places.) (c) Find (or estimate) the P-value. (Round your answer to four decimal places.)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Propositional Calculus
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
SEE MORE TEXTBOOKS