Describe the approximate sampling distribution model

Reference no: EM131422113

In 1960, census results indicated that the age at which American men first married had a mean of 23.3 years. It is widely suspected that young people today are waiting longer to get married. We want to find out if the mean age of first marriage has increased during the past 40 years.

a) Write appropriate hypotheses.

b) We plan to test our hypothesis by selecting a random sample of 40 men who married for the first time last year. Do you think the necessary assumptions for inference are satisfied? Explain.

c) Describe the approximate sampling distribution model for the mean age in such samples.

d) The men in our sample married at an average age of 24.2 years, with a standard deviation of 5.3 years. What's the P-value for this result?

e) Explain (in context) what this P-value means.

f) What's your conclusion?

Reference no: EM131422113

Questions Cloud

What liabilities or concerns might a penetration tester face : CSIS 343- For a penetration tester, are there any risks to conducing vulnerability scanning. What liabilities or concerns might a penetration tester face while undergoing their tests?

Life cycle or general biology of streptococcal toxic shock : Describe the life cycle or general biology of Streptococcal Toxic Shock Syndrome GAS (Group A Streptococcus). How can this disease be prevented? How many people are affected worldwide annually and where is the disease most prevalent?

What could they do to improve the power of the test : Suppose the significance level is changed to α = 0.01. Will the probability of a Type II error increase, decrease, or remain the same?

Are herbal supplements helpful or harmful : Discussion#1 - Are Herbal Supplements Helpful or Harmful? Answer to this question and justify that choice. Do not state that herbal supplements are helpful AND harmful! The point of a debate is to choose one side and defend your position. Do not vaci..

Describe the approximate sampling distribution model : We plan to test our hypothesis by selecting a random sample of 40 men who married for the first time last year. Do you think the necessary assumptions for inference are satisfied? Explain.

Describe the fertilization process : You are asked to describe the fertilization process. Explain how the sperm travels from the testes and arrives at the fallopian tube in time to meet the ova.

Describe sampling distribution model of mean fuel economy : Write appropriate hypotheses.- Are the necessary assumptions to make inferences satisfied?- Describe the sampling distribution model of mean fuel economy for samples like this.

Identify and briefly explain the underlying technologies : For two of the applications presented in Part 1, you are to identify and briefly explain the underlying technologies, recognise any difficulties in the delivery of the service and briefly describe how those difficulties are overcome

How is biotechnology used in every day life : What are some examples of biotechnology and how is biotechnology used in every day life?

User Account

All Pages