35% of pregnancies last within . days from the mean length of pied holes. 25.4 24 4 135 Next 1 questions (12:20).are based on the following, Iss Weights of newborn babies in the United States are normally distributed with a mean of 137 3440 grams and a standard deviation of 435 grams. 138 17 A newborn weighing less than 2200 grams is considered to be at risk. What fraction 139 of newborn babies are in the " at risk" categor? 0.0900 0.0367 0.0150 14 0.0061 144 145 18 80% of newborn babies weigh between ( J grams. 148 2,576.2 4.303.8 2.601.4 4.278.6 2.625.8 4.254.2 149 2.649.5 4.130.3 150 151 what fraction of newborn babies weights is within :2 standard deviations from the 152 population mean weight? 153 0.9688 154 0.9545 155 0.9404 156 0.9265 157 158 20 In Finland the fraction of newborn babies who weight less than 2200 grams is 0.003. 159 The standard deviation of weights is 500 grams. What is the mean weight of 160 3574 181 3610 3646 3683 164 165 166 167 168 169 170 171 172 173 174 175 176 E270 TEST 3 Ready x Accessibility: Investigate