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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?
A survey was done where a random sample of people 18 and over were asked if they preferred comedies, dramas, or neither. The information gathered was broken down by age group and t
Use the data in the BWGHT.txt for this question. The variable descriptions are given in the file BWGHT_variables.txt. There are 1388 observations in this dataset. (a) Run the regre
some examples of karl coefficient.
Diketahui: Biaya Bahan Baku 15.500 Biaya Tenaga Kerja Langsung:14.750 Biaya Overhead pabrik 11.800 Barang Jadi 37500 Bahan baku yang deibebankan ke satu pesanan yang masih dalam
In marketing research field surveys are commonly used to collect primary data from the respondents. 1. Through Personal Interviews: The investigator follows a rigid proced
show the differences between histogram and historigram
A machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks produced is well approximated by a normal distribution with mea
z test
Traditional cost accounting has been based on allocating a subjective or calculated range of indirect expenses to direct costs. Activity Based Costing (ABC) offers an alternative a
a few problems
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