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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?
meaning,definition,scope,origin,advantages and limitation of operation research ?
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explain the graphical method of measure of central tendency.
Less than 5 yrs 22 5-10 18 10-20 5 20-30 4 More than 30 1
In a mathematics examination the average grade was 82 and the standard deviation was 5. all students with grade from 88 to 94 received grade of B. if the grade are approximately no
the near point of hypermetropic person is 75cm if the person uses eyeglasses having power +1.0 D,calculate the distance of distinct vision
Characteristics of index number
_______ 1. F''s share of income from various sources is as follows for the current year: Source F''s Share of Entity''s Net Income F''s Share of Distributions ABC Partnership after
In fowl,the genotype rrpp gives single comb, R_P_ walnut comb, rrP_ pea comb, and R_pp rose comb. a. What comb type will appear and in what proportions in F and F2 if single- co
A survey was conducted among the residents of Pune City, its suburbs and the PuneCantonment area. The following three pie diagrams show their respective preferences for living in C
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