User Account

All Pages

The test statistic for a significance test issues

Assignment Help Mathematics
Reference no: EM13801350

(A) What is the standard error (SE) of the sample estimate of p1 - p2 (where p1 is the proportion for teens aged 12 to 17 and p2 is the proportion for adults 18 and older) ?

(B) Give a 90% confidence interval for p1 - p2 (where p1 is the proportion for teens aged 12 to 17 and p2 is the proportion for adults 18 and older)?

2. Consider a sample of 148 small businesses. During a three-year period, 15 of 106 headed by men and 7 of the 42 headed by women failed. Let p1 be the proportion of businesses headed by women that failed. Let p2 be the proportion of businesses headed by men that failed.

(A) Find the pooled proportion of businesses that failed.

(B) Find the test statistic for a significance test to see if this is evidence the proportion of businesses failed is higher for women than for men.

3. We have two samples. The first sample taken in Alaska in 1999 involved 2100 adults, of which 600 were current smokers. The second sample taken in Alaska in 2009 involved 2400 adults, of which 500 were smokers. The samples are to be compared to determine if the proportion of adults in Alaska who smoke has decreased since 1999. Take p1 to be the proportion of smokers in the 1999 sample, and p2 to be the proportion of smokers in the 2009 sample.

(A) What is the pooled sample estimate of adult smokers in Alaska?

(B) What is the z test statistic for comparing the proportions of smokers in Alaska in 1999 and 2009?

(C) Is there good evidence that the proportion of smokers has decreased over these 10 years?

(D) What is the Margin of error for the 90% (large-sample) confidence interval for p1-p2?Note: We do not do plus-four confidence intervals.

Reference no: EM13801350

Questions Cloud

How should students handle debt : How should students handle debt? What does the government have to do with your money? How does marketing and advertising in social media affect you?
Propose two strategies a public leader can address : From the weekly readings and second e-Activity, compare the U.S. health system that you have researched to the centralized healthcare in European health systems. Propose two (2) strategies a public leader can address regarding both health systems
Behavior change theories and planning models : Behavior Change Theories and Planning Models
Broad spectrum of religious affiliations and religiosity : The US culture has a broad spectrum of religious affiliations and religiosity. As a result of interacting with people who share similarities, people seldom evaluate the main premises of other religions.
The test statistic for a significance test issues : What is the Margin of error for the 90% (large-sample) confidence interval for p1-p2?Note: We do not do plus-four confidence intervals.
Which synonym describes the greatest degree of regret : Which synonym describes the greatest degree of regret? Which of the following correctly describes how the word gain is used here?
An assignment on music of egypt : Normal 0 false false false EN-US X-NONE X-NONE Music of Egypt
Innovation planning and design process : Write a 1,250- to 1,500-word paper on the innovation planning and design process addressed in Week Two. Include the following in your paper:

Reviews

Write a Review

Mathematics Questions & Answers

  State a street light is mounted at the top

A street light is mounted at the top of a 17 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 8 ft/sec along a straight path

  Psychologists interested in learning theory study learning

Psychologists interested in learning theory study learning curves

  Evaluate validity of the next arguments by using euler

Validity of arguments using Euler circles - Evaluate the validity of the next arguments by using Euler circles, then translate the statements into logical statements using the basic connectives and using truth tables, determine the validity of the ..

  Drawing cards and sampling without replacement

Probability : Drawing Cards and Sampling Without Replacement, 3 cards are drawn in succession from a regular straight deck of 52 playing cards. Find the probability that

  What was the value of his ira at the end of 7 years

What was the value of his IRA at the end of 7 years?

  Customers to have more complaints about the waiting time

Consider two grocery stores at which the mean time in line is the same but the variation is different. at which store would you expect the customers to have more complaints about the waiting time?

  You want to deposit 500 per month into the account for 36

you wish to deposit 500 per month into an account for 36 months. assume your interest rate is equal to the prime

  Brief research report on waste amp space presentation and

short research report on waste amp space. presentation and typed short report. what can you tell the class about your

  Find the equation of horizontal and vertical asymptote

Find the equation of horizontal and vertical asymptote of given functions - Find the equations for the horizontal and vertical asymptotes

  Lengths of atlantic croaker fishes are normally distributed

The lengths of Atlantic croaker fishes are normally distributed , with a mean of 9 inches and a standard deviation of 2.56 inches . An Atlantic croaker fish is randomly selected.

  Find the equation of the line for the demand equation

Find the equation of the line for the demand equation. Write your answer in the form p = mx + b. Hint: Write an equation using two points in the form (x,p).

  Real-life math example

You decide to start your article with a math example that the readers can understand. Describe a real world situation that could be modeled by a function that is increasing, then constant, then decreasing.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd