It is estimated that 4000 of the 10,000 voting residents of a town are against a new sales tax. If 15 eligible voters are selected at random

Question

It is estimated that 4000 of the 10,000 voting residents of a town are against a new sales tax. If 15 eligible voters are selected at random and asked their opinion, what is the probability that at most 7 favor the new tax?

in progress 0
Faith 1 week 2021-10-10T04:13:24+00:00 1 Answer 0

Answers ( )

    0
    2021-10-10T04:14:41+00:00

    Answer:

    The probability that at most 7 favor the new tax is 0.7869

    Step-by-step explanation:

    Total number of voting resident = 10000

    number of voting resident against new sales tax = 4000

    therefore probability of choosing a voting resident against new sales tax = 4000/10000 = 0.4

    If 15 eligible voters are selected at random and asked their opinion, what is the probability that at most 7 favor the new tax

    Using binomial,

    number of selected voters(n) =15,

    p=0.4

    P(x<=0.7) = binomialcdf(15, 0.4, 7)

    Using your calculator

    P(x<=0.7) = binomialcdf(15, 0.4, 7) = 0.7869

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )