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15 December, 23:17

Twenty percent of adults in a particular community have at least a​ bachelor's degree. Suppose x is a binomial random variable that counts the number of adults with at least a​ bachelor's degree in a random sample of 100 adults from the community. If you are using a calculator with the binompdf and binomcdf​ commands, which of the following is the most efficient way to calculate the probability that more than 60 adults have a​ bachelor's degree, ​ P (x?>60) ?

a. P (x < 60) = binompdf (100,0 20,59)

b. P (x<60) = binompdf (100.0.20.60)

c. P (x<60) = binomcdf (100,0,20,59)

d. P (x<60) = binomcdf (100.0.20.60)

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  1. 16 December, 00:03
    0
    Step-by-step explanation:

    Since we are dealing with binomial probability in this scenario, then the outcome is either a success or a failure. A success in this case means that a chosen adult has a bachelor's degree. The probability of success, p would be 20/100 = 0.2

    The number of adults sampled, n is 100

    The number of success, x is 60

    The probability that more than 60 adults have a bachelor's degree P (x >60) would be represented as

    d. P (x<60) = binomcdf (100.0.20.60)

    binompdf is used when we want to determine P (x = 60)
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