Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Find the Confidence interval for population mean.

The following 80 observations represent the population of weights in pounds of women in a statistics class. You are to assume that it is normally distributed.

Row 1: 123, 120, 121, 117, 117, 124, 109 124, 124, 124, 112, 119, 125, 124, 118, 129, 126, 112, 121, 120

Row 2: 124, 112, 121, 120, 117, 122, 122, 117, 117, 125, 125, 121, 131, 127, 116, 123, 130, 117, 120, 114

Row 3: 119, 123, 118, 122, 116, 116, 121, 113, 119, 127, 117, 124, 118, 117, 127, 122, 122, 119, 114. 121

Row 4: 121, 122, 123, 124, 125, 126, 127, 128, 128, 129, 130, 131, 130, 129, 129, 126, 130, 133, 131, 132

Let Row 3 represent a random sample of 20 women from the population.  Let S=the sample mean of the 20 weights from Row 3.

a. What is the likelihood of observing a sample mean weight from any 20 women selected from this population that is greater than S using the population standard deviation?

b. utilize the population standard deviation along with the sample mean, S, and find a 92 out confidence interval for the population mean. Is the true population mean contained in this interval?

c. suppose that the population standard deviation is unknown. Utilize S to find a 94 out confidence interval for the population mean. Is the true population mean contained in this interval?

d. make use of the population standard deviation and determine how many woman you would need to sample to ensure that you are 93 out confident that the sample mean is within 3 pounds of the population mean.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921849

Have any Question? 


Related Questions in Statistics and Probability

Holiday fruit company buys oranges and processes them into

Holiday Fruit Company buys oranges and processes them into gift fruit baskets and fresh juice.  The company grades the fruit it buys on a scale from 1 (lowest quality) to 5 (highest quality).  The following summarizes Ho ...

At a local college 316 of the male students are smokers and

At a local college, 316 of the male students are smokers and 474 are non-smokers. Of the female students, 70 are smokers and 630 are non-smokers. A male student and a female student from the college are randomly selected ...

Describe the collapse of the soviet union begin with the

Describe the collapse of the Soviet Union. Begin with the events during the 1980s including the entire Gorbachev era. Should include at least the following topics: 1. Poland's democratic revolution of the 1980s 2. Gorbac ...

The course text notes that tensions and differences in the

The course text notes that tensions and differences in the 1770s led to the American Revolution that eventually produced independence for the United States from Great Britain. When the War for American Independence broke ...

Project -you must show all steps for the hypothesis testing

Project - You must show all steps for the hypothesis testing; use either the critical value approach or the p-value approach. 1) a) Choose one of the following quantitative variables from the data set: Age, Weight, Cell ...

Calculated the correlation between outside temperature and

Calculated the correlation between outside temperature and class attendance. The regression equation for the data in that exercise is Attendance = 114.35 - .61 (temperature). Imagine that the weather forecaster predicts ...

What is the probability that a customer who bought an item

What is the probability that a customer who bought an item at regular price purchased the extended warranty? Purchased extended warranty of regular price- 0.21 Purchased extended warranty of sale price - 0.14 Did not pur ...

At a school pep rally a group of sophomore students

At a school pep rally, a group of sophomore students organized a free raffle for prizes. They claim that they put the names of all the students in the school in the basket and that they randomly drew 36 names out of this ...

Reading journal assignment stage iifor this portion of the

Reading Journal Assignment Stage II For this portion of the journal, you will create five journal entries, each addressing the prompts given below. Each entry will be one page in length, double spaced, with 12 point font ...

1 your eccentric aunt has left you 50000 in alcan shares

1) Your eccentric aunt has left you $50,000 in Alcan shares plus $100,000 cash. Unfortunately, her will requires that the Alcan stock not be sold for one year and that $60,000 cash must entirely be invested in T-bills wi ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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