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Data showed that 22% of people in a small town was infected with the COVID-19 virus. A random sample of six residents from this town
Data showed that 22% of people in a small town was infected with the COVID-19 virus. A random sample of six residents from this town was selected.
The probability that exactly two of these residents was infected was:
A 0.163
B 0.328
C 0.269
D 0.215
The probability that at most 1 of these residents was infected was: (4 marks)
A 0.687
B 0.520
C 0.709
D 0.606
Consider the normal distribution function. The area between scores of 1.00 and 1.00 is:
A 0.00
B 0.34
C 0.57
D 0.68
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