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