JazmineDavis5930
27.02.2020 •
Mathematics
How is the result affected by the additional information that the survey subjects volunteered to respond? A. The result should not be impacted by this because volunteers are likely to have the most relevant responses. 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. C. It is very possible that the result is not valid because not everyone uses public Wi-Fi. D. The result should not be impacted by this because there is no reason to lie when responding.
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Ответ:
A. 0.9881 B. 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:
Probability ( of being careful about personal information when using a public Wi-Fi hotspot) = 0.67
Probability ( of not being careful about personal information when using a public Wi-Fi hotspot) = 1-0.67 = 0.33
Probability ( all the 4 people are not being careful about personal information when using a public Wi-Fi hotspot) = 0.33*0.33*0.33*0.33
=0.0119
Probability ( atleast one of the 4 people is careful about personal information when using a public Wi-Fi hotspot) = 1 - 0.0119
=0.9881
B. Additional information provided by the survey subjects will change the present result if the new information provided is contrary opinion to the information provided earlier. The result will certainly be invalid if the sample collected is not represetative of the people who use public Wi-Fi
Ответ:
The atomic number of iridium is 77 and it comes just before platinum (atomic number = 78).
In iridium,
The number of electrons = no. Of protons = 77.
The no. Of electrons and the no. Of protons is same as atomic number.