statistics

posted by .

One method for estimating the availability of office space in large cities is to conduct a random sample of offices, and calculate the proportion of offices currently being used. Suppose that real estate agents believe that of all offices are currently occupied, and decide to take a sample to assess their belief. They are considering a sample size of n = 40.

a) Show that this sample size is large enough to justify using the normal approximation to the sampling distribution of p. (2 pts)

b) What is the mean of the sampling distribution of p if the real estate agents are correct? (2pts)

c) What is the standard deviation of the sampling distribution of p if the real estate agents are correct? (4 pts)

d) If the real estate agents are correct, what is the probability that a sample proportion, p, would differ from by as much as 0.05? (8 pts)

  • statistics -

    a)
    b)1
    c)standard deviation=

  • statistics -

    c) 0.07246

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. English

    Could someone tell me if the punctuation in this sentence is correct?
  2. Business Accounting

    Which is an capital expenditure and revenue expenditure. 1.Overhauled and reconstructed lathe motor to produce more parts per hour. 2. Yearly computer maintenance contract. 3. Construct walls to divide the store offices. 4. Poured …
  3. language

    Familiarize oneself with the types of jobs most often available, with the various employment offices, and with the skills most in demand. what correction should be made?
  4. statistics

    Twenty percent of all adult males did not visit their physicians’ offices last year. The probability that less than 23% of adult males in a sample of 800 did not visit their physicians' offices last year is approximately:
  5. stats

    Cushman and Wakefield accounting that the average annual rent for office space in Tampa was $17.63 per square foot. A real estate agent selected a random sample of 15 rental properties (offices) and found that mean rent was $18.72 …
  6. statistics

    Thirty-two percent of adults did not visit their physicians' offices last year. The probability, rounded to four decimal places, that in a random sample of 8 adults, exactly 3 will say they did not visit their physicians' offices last …
  7. English

    Which sentence is correct? A. The company closed their offices. B. The company closed its offices. C. The company closed it's offices. D. The company closed there offices. C
  8. geometry

    Two rectangular panels are used to construct the four office cubicle. They are designed to pivot at the center Line NS. If the two panels are pivoted to increase the size of one office what happens to the adjacent offices?
  9. Algebra

    Agents J and K work in a long hallway with 4000 equally-spaced, consecutive offices. The agents decide to walk toward each other so they can meet and have lunch together. Agent J has recently been relocated from office 2013 to office …
  10. math

    A salesperson needs to visit 15 different offices during the week. In how many ways could she visit 3 different offices each day from Monday to Friday?

More Similar Questions