what is the sample standard deviation?

boulder 10k race was 1.78 standard deviations faster than women's average group. 405 women ran , assuming normal distribution, how many women ran faster than joan?

How we quantify the amount of sampling variation—e.g. the standard deviation of the distribution of sample statistics?

In an advertising campaign, a snack company claimed that every 18-ounce bag of its cookies contained at least 1000 chocolate chips. Two statisticians attempted to verify the claim. The accompanying data represent the number of chips in an 18-ounce bag of the company's cookies based on their study. Complete parts (a) through (e). Click here to view the 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). Chocolate Chip Data Table 1216 1216 1218 1267 1274 1278 1289 1290 1298 1310 1327 1092 1094 1151 1348 1169 1356 1106 1181 1358 1124 1127 1135 1136 1143 1190 1231 1378 1195 1205 1210 1215 1241 1243 1246 1253 1402 1415 1440 1516 Print Done

77​% of U.S. adults think that political correctness is a problem in America today. You randomly select six U.S. adults and ask them whether they think that political correctness is a problem in America today. The random variable represents the number of U.S. adults who think that political correctness is a problem in America today. Answer the questions below. What is the mean?   What is the variance?   what is the standard deviation?    Interpret the results

Does the sample size ? affect the standard deviation of all possible samplemeans? Explain your answer.

Prof. Torres took her dog Manzy for a walk for 6 days.  These are the number of minutes of each of the 6 days. (Round to hundredths, if needed).  5, 25, 60, 25, 25, 50   What is the mean? What is the sum of squares? What is the sample variance ? What is the sample standard deviation?

z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?