ECON E270-Among all adult Indiana residents 85% are

Subject: Mathematics    / Statistics
Question

Questions 14-17 are based on the following information

Among all adult Indiana residents 85% are high school graduates. Answer questions 14-17 based on sampling distribution of P for random samples of n=520 Indiana residents.

14.) The fraction of sample proportions obtained from samples of size n=520 that fall between +-0.04 (4 percentage points) from the population porportion PIE is ___
0.9476

0.9742

0.9892

0.9938

15.) The fraction of sample proportions obtained from samples of size n = 750 that fall within ±0.03 (3 percentage points) from ? is _________.
0.9792
0.9452
0.9232
0.8764

16.)The lower and upper ends of the interval which contains the middle 95% of all sample proportion obtained from samples of size n = 600 are: p?? = _______, p?? = _______

A.) 0.835;0.865

B.) 0.831;0.869

C.)0.821;0.879

D.) 0.812;0.888

17.) In the previous question, in order the obtain a margin of error of ±0.02 (MOE = 0.02) for the middle interval that contains the middle 95% of all sample proportions, the minimum sample is: n = ______.

A.) 1225

B.) 1245

C.) 1265

D.) 1285