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

Locate one article presenting research using polynomial

Locate one article presenting research using polynomial regression. Your task now is to critique the appropriateness, utility, alternatives, strengths, and weaknesses of the use of statistics to support the hypotheses of ...

What were the causes of the cold war also describe the

What were the causes of the Cold War? Also, describe the steps that the USA took to meet the perceived Soviet threat during the 1940s, '50s and '60s. Be sure to include the following topics: Iran crisis of 1946 Iron Curt ...

1 what is the difference between a stratum and a cluster2

1. What is the difference between a stratum and a cluster? 2. What is the drawback of obtaining random samples by telephone? 3. In what way would the use of sampling improve the accuracy of the United States census?

A smartphone company has to decide which battery they will

A smartphone company has to decide which battery they will use for their upcoming model. Two battery manufacturers A and B are competing to get the contract. 15 smartphones of the upcoming model were tested with batterie ...

Validity true story i once spoke to a retired professor who

Validity: True story: I once spoke to a retired professor who used to teach general studies geography. His grading technique was to throw the papers/tests on the ground and randomly assign the same grade to each pile (wi ...

Find the indicated area under the standard normal curve to

Find the indicated area under the standard normal curve. To the left of z= - 1.96 The area to the left of z = -1.96 under the standard normal curve is __.(Round to four decimal places as needed.)

Questions1 the following results were observed in a

QUESTIONS: 1. The following results were observed in a prospective study of the drug Viagra (based on data from Pfizer Inc.)  Use the data to answer the following questions:   Viagra Treatment Placebo Headache 117 29 No ...

Consider the following gameyou pay 100 and a fair 6-sided

Consider the following game. You pay $1.00 and a fair 6-sided die is rolled. If the roll is 1 or 3, then you get your dollar back and the game ends. If the roll is 5, you get $2.00 back (your dollar plus an additional do ...

Shoesmith wave inc a new and largely unproven economic

Shoesmith Wave, Inc., a new and largely unproven economic forecasting service, expects the inflation rate in South Korea to average 9 percent per year over the next five years. In comparison, Shoesmith expects a U.S. inf ...

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.

  • 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