Suppose the nationwide high school dropout rate for 2014 was around 13.82%. If you checked the records of 762 students in high school in 2014, what is the probability that between 13.37% and 14.47% of them ended up dropping out?
Question 5 options:









P(drop out), p = 0.1382
Sample size, n = 762
P( < A) = P(Z < (A  )/)
= p = 0.1382
=
=
= 0.0125
Probability that between 13.37% and 14.47% of them ended up dropping out = P(0.1337 < < 0.1447)
= P( < 0.1447)  P( < 0.1337)
= P(Z < (0.1447  0.1382)/0.0125)  P( < (0.1337  0.1382)/0.0125)
= P(Z < 0.52)  P(Z < 0.36)
= 0.6985  0.3594
= 0.3391
Ans: 4) 0.3390
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