Business, 12.03.2020 23:54, jraghubir50
In a sample of 7070 stores of a certain company, 6262 violated a scanner accuracy standard. It has been demonstrated that the conditions for a valid large-sample confidence interval for the true proportion of the stores that violate the standard were not met. Determine the number of stores that must be sampled in order to estimate the true proportion to within 0.050.05 with 9595% confidence using the large-sample method.
Answers: 1
(a) 
and we are interested in order to find the value of n, if we solve n from equation (a) we got: 
(b) 
number of companies that violated the scanner accuracy standard.
random sample taken
estimated proportion of companies that violated the scanner accuracy standard
true population proportion of companies that violated the scanner accuracy standard
and 
. And the critical value would be given by:
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In a sample of 7070 stores of a certain company, 6262 violated a scanner accuracy standard. It has b...
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