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According to the local real estate board, the average number of days that homes stay on the market before selling is 78.4 with a standard deviation equal to 11 days. A prospective seller selected a random sample of 36 homes from the multiple listing service. Above what value for the sample mean should 95 percent of all possible sample means fall?

  • statistics -

    78.4-+ 1.96*11/sqrt(36))

    (74.81, 81.99)

  • statistics -

    78.4-+ 1.96*11/sqrt(36))

    (74.81, 81.99)

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