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The quick method for a confidence interval for a proportion uses
as an approximation for a 95% confidence interval. The margin of error in this case is slightly larger than necessary. Suppose that a simple random sample of 500 motorcycle registrations finds that 68 of the motorcycles are Yamahas. Give a 95% confidence interval for the proportion of motorcycles in the population that are Yamahas using the quick method of chapter 3 and then by the more precise method of chapter 21.
difference between large sample test and small sample test
Scenario : Mrs dick's year 1s and 2s carried out a level-one science investigation to explain the changes in a particular plant over a period of time. As part of the investigation
Dr. Jim Mirabella UNIT EIGHT: DATA ANALYSIS PROJECT All Excel output should be copied into a single Word document where you must enter all of your responses to the questions below.
Steps in ANOVA The three steps which constitute the analysis of variance are as follows: To determine an estimate of the population variance from the variance that exi
MARKS IN LAW :10 11 10 11 11 14 12 12 13 10 MARKS IN STATISTICS :20 21 22 21 23 23 22 21 24 23 MARKS IN LAW:13 12 11 12 10 14 14 12 13 10 MARKS IN STATISTICS:24 23 22 23 22 22 24 2
i need to solve couple questions on a data set ?
Statistical Errors Statistical data are obtained either by measurement or by observation. Hence to think of perfect accuracy is only a delusion or a myth, It is no
how is a free hand graph secular trend method plotted
it is said that management is equivalent to decision making? do you agree? explain
What is a null hypothesis? ..
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