Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Find the Confidence Interval the difference between two population means

Most adolescents experience a growth spurt when they are between 12 and 15 years old. This period of dramatic growth generally occurs around age 12 for girls and around age 14 for boys. A researcher studying physical development selected a random sample of n = 9 girls and a second sample of n = 16 boys and recorded the gain in height (in millimeters) between the 14th birthday and 15th birthday for each participant. The girls showed an average gain of M = 40 millimeters with SS = 1152, and the boys gained an average of M = 95 millimeters with SS = 2160.

a. approximate the population means growth in 1 year for 14-year-old boys. Create a point estimate and an 80 percent confidence interval estimate.
b. approximate the population means growth in 1 year for 14-year-old girls. Create a point estimate and an 80 Create confidence interval estimate.
c. approximate the mean difference in growth for boys versus girls during this 1-year-period. Again, make a point estimate and an 80 percent confidence interval estimate.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921872

Have any Question? 


Related Questions in Statistics and Probability

Use the given degree of confidence and sample data to

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Round to three decimal places. n=74, x=12; 95% confidence.

A war of attrition game two small grocery stores on the

A war of attrition game.) Two small grocery stores on the same block are feeling the effects of a large supermarket that was recently constructed a half-mile away. As long as both remain in business, each will lose $1000 ...

In a study of smokers who tried to quit smoking with

In a study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one year after the treatment, and 32 were not smoking one year after the treatment. We want to use a .05 significance level to ...

1 describe how structural equations modeling works2

1. Describe how structural equations modeling works. 2. Distinguish between latent variable modeling and path analysis as types of structural equations modeling.

What is the difference between dependent and independent

What is the difference between dependent and independent variables? On which side of the regression equation does each lie? Describe how Doane's rule relates to the number of allowed independent variables.  Why is this i ...

Two population meansa tomato farmer with a very large farm

Two Population Means A tomato farmer with a very large farm of approximately 2200 acres had heard about a new type of rather expensive fertilizer which would supposedly significantly increase his production. The frugal f ...

The two-person game shown in table 1 has a unique nash

The two-person game shown in Table 1 has a unique Nash equilibrium (see Moulin and Vial, 1978) in which each player's expected payoff is 3.

The time it takes to complete a standardized exam is

The time it takes to complete a standardized exam is normally distributed with a mean of 70 minutes and a standard deviation of 10 minutes. How much time should be allowed for the exam so that 80% of the students will fi ...

1 what are some ways in which scientists get ideas for

1. What are some ways in which scientists get ideas for their research? 2. Why can theories not be proved or disproved by research? 3. Given that proof and disproof are impossible in science, how does scientific knowledg ...

1 a study was conducted at a local college to analyze the

1. A study was conducted at a local college to analyze the average GPA of students graduated from Arizona State in 2012. 100 students graduated from Arizona in 2012 were randomly selected,and the average GPA for the grou ...

  • 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