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1. In your own words explain the difference between a point estimate and an interval estimate of a parameter? Which is better? Why?
2. What information is necessary to calculate a confidence interval? Is the size of the population relevant when one is determining the sample size for a confidence interval? What is necessary to determine the sample size?
3. A researcher is interested in estimating the noise levels in decibels at area urban hospitals. He wants to be 90% confident that his estimate is correct. If the standard deviation is 4.8, how large a sample is needed to get the desired information and to be accurate within 0.65 decibels?
Soddy and Rutherford, from their experimental study regarding the radioactive disintegration formulated the following laws, known as laws of radioactive disintegration. 1. Radioac
Two construction contracts are to be randomly assigned to one or more of three firms. Numbering the firms I, II, and III, let X1 be the number of contracts assigned to firm I, and
A coin was flipped twenty times and landed on heads fifteen times. If the coin was balanced fair what is the probability of a head on the next toss
First of all, thank you very much for your help. I have a mixes data base, categorial variable, liclekt scale on 5 and 4, and continous variable, and several dummy. I would need h
TIME SERIES ANALYSIS: 1) Discuss the various models of Time series. 2) What are the various methods of trend analysis? What are their implications in the business world?
how to draw it?
Amount to be provided for retirement of long-term obligations An “other debit” common journal value used in the General Long-Term Bills Additional Consideration that symbolizes t
Sales from a leading motor dealership were monitored over the past four years. The sales figures are presented in the accompanying table. Year Quarter 1 Quarter 2 Quarter 3 Quarter
compute three protected t tests to compare all possible pairs of means. Also, for α = .05, what is the value of LSD ? Which pairs are significantly different from one another,
Difference between Historigrams and Histogram
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