Answer: P (atleast one is careful) is
1 - 0.012 =0.988
B) It is very possible that the result is not valid because the sample may not be representative of the people who use public Wi-Fi
Step-by-step explanation:
P(not careful) =1 - 0.67 = 0.33
P (4 all not careful) = (0.33)^4 =0.012
P (atleast one is careful) = 1 - 0.012 =0.988
Answer:
Survey Data Collection.
Step-by-step explanation:
This is a survey because there are survey questionnaires (wellness exam).
Answer: B I think I hope it helps
Step-by-step explanation:
