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A factory is considering replacing some older machines They decided that if the proportion of...

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A factory is considering replacing some older machines They decided that if the proportion of defective items the machine produces is significantly more than 3 it will be replaced A sample of 500 items produced on an older machine showed that 19 of them are defective At a significance level of 10 does the factory get rid of the machine Ho HA 0 03 0 03 z stat Round to 2 decimal places 1 0486 p value Do not round 1472 What is your decision Retain Ho or Reject Ho Reiert Ho

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