he data sets below include four random sample of pulse rates, in beats per minute. Each sample includes the pulse rates for 7 individuals. Use the Range Rule of Thumb to find an estimate for the standard deviation, then determine which sample has the largest amount of variation.   Sample 1 64,78,54,102,76,86,56 Sample 2 100,90,70,70,78,70,94 Sample 3 70,66,50,72,66,64,54 Sample 4 78,36,102,68,66,56,70

Alexander Borbely is a professor at the University of Zurich Medical School, where he is director of the sleep laboratory. The histogram in the figure below is based on information from his book Secrets of Sleep. The histogram displays hours of sleep per day for a random sample of 200 subjects. Estimate the mean hours of sleep, standard deviation of hours of sleep and coefficient of variation. (Enter mean to 1 decimal place, s and CV to 2 decimal places.)

Find the mode, mean, and standard deviation of the following data: 3, 2, 3, 4, 6

Consider the following data: −9,13,−14,−14,−9,−14,−9−9,13,−14,−14,−9,−14,−9 Copy Data Step 2 of 3:  Calculate the value of the sample standard deviation. Round your answer to one decimal place.

Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results are given in the frequency distribution:   Aptitude Score 0 1 2 3 4 5 Frequency 1 6 4 1 5 2   Calculate the sample standard deviation of this data. Answer using two decimal places.

Recently, a random sample of 13-18 year olds was asked, "How much do you currently have in savings?" The data in the table represent the responses to the survey. Approximate the mean and standard deviation amount of savings. Click the icon to view the frequency distribution for the amount of savings. The sample mean amount of savings is $ (Round to the nearest dollar as needed.) Frequency distribution of amount of savings Savings $0-$199 $200-$399 $400-$599 $600-$799 $800-$999 $1000-$1199 $1200-$1399 Print Frequency 338 97 50 25 10 7 3 Done X

The birth weights of newborn elephants are Normally distributed with a mean of 160 pounds and a standard deviation of 12 pounds. What is the weight of the newborn elephant at the 33rd percentile? Round to the nearest whole number. 175 lbs 155 lbs 145 lbs 165 lbs

The table below summarizes the number of hours a sample of college students spent watching television in the past week. Hours Frequency 10 - 12 4 13 - 15 12 16 - 18 20 19 - 21 14 Find the standard deviation.

A successful basketball player has a height of 6 feet 11 ​inches, or 211 cm. Based on statistics from a data​ set, his height converts to the z score of 5.17. How many standard deviations is his height above the​ mean?

The weight loss for the first six months of a diet program is normally distributed with an average 40 pounds and a standard deviation of 20 pounds. How much weight would a participant have to loss to be in the 90th percentile?