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A researcher wishes to estimate the proportion of x ray machines that malfunction. A random sample of 250 machines is taken, and 82 of the
A researcher wishes to estimate the proportion of x ray machines that malfunction. A random sample of 250 machines is taken, and 82 of the machines in the sample malfunction. Based upon this, computer a 90% confidence interval for the proportion of all x ray machines that malfunctions. Then find the lower limit and upper limit of the 90% confidence interval
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Cambridge IGCSE And O Level Additional Mathematics Coursebook
Authors: Sue Pemberton
2nd Edition
1108411665, 9781108411660
