Question

Question Help A government health organization publishes information on AIDS in a weekly report During one year, the number of provisionales AIDS for each of 50 regions is as shown below. Solve parts (a) through (d) below 41 34 16 604 106 594 6351 1365 1542 724 5 522 1047 732 197 163 78 315 2 10 4B 87 191 1369 826 87 1005 779 1954 4458 195 171 494 474 152 567 210 4980 13 24 8 328 120 605 73 299 467 266 5866 16 93 a. Obtain the standard deviation of the variable number of provisional AIDS cases for the population of 50 regions -case (Round to two decimal places as needed.) b. Consider simple random samples without replacement from the population of 50 regions. Strictly speaking, what is the correct formula for obtaining the standard deviation of the sample mean? Letn be the sample size and N be the population size. Fill in the correct answers below The formula is because the sampling is done V replacement from an) V population c. Referring to part (b), obtain oz for simple random samples of size 35 by using botn forma - (Round to two decimal places as needed.)

Answer 1

solution a) N50 standard deviation r = 1453.79 Cases b) The formula i Tx ((N-n). This because the sampling is without replacement from n=50 A-1 dune population

c) n for n. 35 245, 73 Ty = olun 1453.79 5.79 hvis Tu = (N-n) Hun M-) 135.96 > As the value of ) (50-35) 245.73 50-1 n gets father from the gets futher lower from i so the from the ture (N-n) value of value then get Thu A- value decreased (non) N- d) na 2 Tx Tlun ius3.191 va 1027.98 (N-1) olm NI (50-2) 50 - 1 x 1027-78 = 1017.44

As the value (N-n) op toward A- Closer to i value of ngets closer to the Thin gets EN-n) To so the value get tive The value NI