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A computer software magazine compares the rates of malware infection for computers protected by security software A with the rates of infection for computers protected
A computer software magazine compares the rates of malware infection for computers protected by security software A with the rates of infection for computers protected by security software B
They found that out of computers with security software A became infected with some type of malware after hours of internet interaction. For security software B out of computers became infected after hours of internet interaction.
Assuming these to be random samples of infection rates for the two security software packages, construct a confidence interval for the difference between the proportions of infection for the two types of security software packages.
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