Question

Question Help The recommended dietary allowance (RDA) ofron for adult females is 18 miligrams img per day. The genron intakes ima) were obtained for 45 random adult formales. At the significance level do the data suggest that aduit females are, on average, getting less than the RDA of 18 mg of tron? Assume that the population standard deviation is 48 mg Preliminary data analyses indicate that applying the z-test is reasonable. (Note: 14.75 mg) Cck here to view the iron intake data Click here to view Page 1 of the table of areas under the standard normal curve Click here to view Page 2 of the table of areas under the standardnormal curve Iron intake (mg per day) State the hypotheses for the one-mean 2-test HoH V mg 148 188 144 150 112 185 182 179 149 16.1 12.6 17.1 212 205 11.3 125 152 11.4 HML mg 153 90 198 184 140 17.2 11.7 162 12.7 (Type integers or decimals as needed. Do not round) 149 118 12.4 183 134 12 2 110 174 128 Compute the value of the best statistic 17.2 6.0 16.5 123 15.9 14.5 13.0 16.8 11.3 Print Done (Round to two decimal places as needed) Determine the critical values). Select the correct choice below and in the answer box within your choice (Round to two decimal places as needed) OA. The critical value is -2,- OB. The critical values are +30/22 OC. The critical value is - 2 Click to select your answer(s)

Answer 1

Solution: Ginen =l4.75 T=4.8 n=u5 ,2=0.05 Test hypothesis : Hoi M=18mg Has M L 18 mg rest Statistic, Z= ñ-u olso - 14.75 -18 --4.5420 4.8/vas Z = -4.54 Z2 = -1.64 , using Z-table, left tail id=0.05 => 1-Z2 =1064 option