Answer:
Explanation:
We would assume a binomial distribution for the number of Internet users that are more careful about personal information when using a public Wi-Fi hotspot. The formula is expressed as
P(x = r) = nCr × p^r × q^(n - r)
Where
x represent the number of successes.
p represents the probability of success.
q = (1 - p) represents the probability of failure.
n represents the number of trials or sample.
From the information given,
p = 64% = 64/100 = 0.64
q = 1 - p = 1 - 0.64
q = 0.36
n = 3
1) The probability that among three randomly selected internet users, at least one is more careful about personal information when using a public Wi-Fi hotspot is expressed as
P(x ≥ 1) = 1 - P(x < 1)
P(x < 1) = P(x = 0)
P(x = 0) = 3C0 × 0.64^0 × 0.36^(3 - 0)
P(x = 0) = 0.047
P(x ≥ 1) = 1 - 0.047 = 0.953
If more information is provided, the result would be biased.