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31 March, 16:22

A survey asks a random sample of 2500 adults in Ohio if they support an increase in the state sales tax from 5.25% to 5.50%, with the additional revenue going to education. Let X denote the number in the sample that say they support the increase. Suppose that 30% of all adults in Ohio support the increase. 8. The mean of X is a. 30. b. 525. c. 750. d. 1750.

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  1. 31 March, 18:07
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    Answer: 750

    Step-by-step explanation:

    From the question,

    n=2500

    P = 30% = 30/100 = 0.30

    X ~ Binomial (n, P)

    E (X) = n * p = 2500 * 0.30

    E (X) = 750

    The mean of X is 750
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Home » Mathematics » A survey asks a random sample of 2500 adults in Ohio if they support an increase in the state sales tax from 5.25% to 5.50%, with the additional revenue going to education. Let X denote the number in the sample that say they support the increase.
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