This question: 1 point(s) possible Submit te In an advertising campaign, a snack company claimed that every 18-ounce bago cookies based on their study. Complete parts (a) through (e) rify the claim. The accompanying data represent the number of chips in an 18-ounce bag of the company X Click here to view the chocolate chip data table. Chocolate Chip Data Table Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). 1084 1149 1212 265 1349 1103 1 161 1218 1274 1353 1107 1 186 1219 1275 1358 z papadxa zpepedxa 1121 1189 1225 1291 1379 Expected z 25 1131 1196 1242 1293 1399 1000 1300 1600 1000 133 1 196 1243 1295 1419 25 - LE Observed value Ob! 140 1210 1248 1302 1443 1000 1300 1600 1143 1210 1254 322 1513 Observed value (b) Determine the mean and standard deviation of the sample data. The mean of the sample data is 1246.3 Round to one decimal place as needed.) Print Done The standard deviation of the sample data is (Round to one decimal place as needed.) (c) Using the sample mean and sample standard deviation obtained in part (b) as estimates for the population mean and population standard deviation, respectively, draw a graph of a normal model for the distribution of chips in a bag of cookies. DA. O B. OC. O D. Observed O Observed Observed value value value Observed of value Of 1500 1800 900 1200 1500 1800 1000 1400 1800 2200 600 1000 1400 1800 (d) Using the normal model from part (c), find the probability that an 18-ounce bag of chips selected at random contains at least 1000 chips. The probability is (Round to three decimal places as needed.) (e) Using the normal model from part (c), find the probability that an 18-ounce bag of chips selected at random contains between 1200 and 1500 chips. The probability is (Round to three decimal places as needed.)